{"id":3173,"date":"2025-03-18T18:33:33","date_gmt":"2025-03-18T18:33:33","guid":{"rendered":"https:\/\/medibillmd.com\/blog\/?p=3173"},"modified":"2025-03-18T18:48:36","modified_gmt":"2025-03-18T18:48:36","slug":"modifiers-rt-and-lt","status":"publish","type":"post","link":"https:\/\/medibillmd.com\/blog\/modifiers-rt-and-lt\/","title":{"rendered":"Understanding Modifiers RT &#038; LT in Medical Billing"},"content":{"rendered":"\n<p>What do you know about <a href=\"https:\/\/www.cms.gov\/medicare-coverage-database\/view\/article.aspx?articleId=56869\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">laterality modifiers<\/a>? You cannot skip these modifiers if you have performed a procedure on one of the paired body parts, such as eyes, ears, arms, legs, and even organs. We all know that medical billing isn\u2019t just about submitting timely claims. It is also about specifying everything. RT and LT modifiers help with that!<\/p>\n\n\n\n<p>These two-character laterality codes clarify the location of the performed service, helping you avoid claim denials, compliance issues, or underpayments. But do you know about their billing requirements? Let us guide you in understanding how and when to use these modifiers. Follow our tips to accurately bill for joint injections, imaging, or surgical procedures.<\/p>\n\n\n\t\t\t\t<div class=\"wp-block-uagb-table-of-contents uagb-toc__align-left uagb-toc__columns-1 uagb-toc__collapse uagb-block-a0e5cb96      \"\n\t\t\t\t\tdata-scroll= \"1\"\n\t\t\t\t\tdata-offset= \"30\"\n\t\t\t\t\tstyle=\"\"\n\t\t\t\t>\n\t\t\t\t<div class=\"uagb-toc__wrap\">\n\t\t\t\t\t\t<div class=\"uagb-toc__title\">\n\t\t\t\t\t\t\tTable Of Contents\t\t\t\t\t\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 384 512\"><path d=\"M192 384c-8.188 0-16.38-3.125-22.62-9.375l-160-160c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L192 306.8l137.4-137.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-160 160C208.4 380.9 200.2 384 192 384z\"><\/path><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"uagb-toc__list-wrap \">\n\t\t\t\t\t\t<ol class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#modifier-rt-description\" class=\"uagb-toc-link__trigger\">Modifier RT &#8211; Description<\/a><li class=\"uagb-toc__list\"><a href=\"#modifier-lt-description\" class=\"uagb-toc-link__trigger\">Modifier LT &#8211; Description<\/a><li class=\"uagb-toc__list\"><a href=\"#scenarios-where-modifiers-rt-lt-are-applicable\" class=\"uagb-toc-link__trigger\">Scenarios Where Modifiers RT &amp; LT are Applicable<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#when-to-use-modifier-rt\" class=\"uagb-toc-link__trigger\">When to Use Modifier RT<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#when-to-use-modifier-lt\" class=\"uagb-toc-link__trigger\">When to Use Modifier LT \u00a0<\/a><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#modifiers-rt-lt-billing-guidelines\" class=\"uagb-toc-link__trigger\">Modifiers RT &amp; LT &#8211; Billing Guidelines<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#appropriate-uses-of-rt-lt-modifiers\" class=\"uagb-toc-link__trigger\">Appropriate Uses of RT &amp; LT Modifiers<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#inappropriate-uses-of-rt-lt-modifiers\" class=\"uagb-toc-link__trigger\">Inappropriate Uses of RT &amp; LT Modifiers\u00a0\u00a0<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#documentation-requirements\" class=\"uagb-toc-link__trigger\">Documentation Requirements\u00a0\u00a0<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#check-payer-specific-requirements\" class=\"uagb-toc-link__trigger\">Check Payer-Specific Requirements\u00a0\u00a0<\/a><\/li><\/ul><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#summary\" class=\"uagb-toc-link__trigger\">Summary<\/a><\/ul><\/ul><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Modifier RT<\/strong><strong> &#8211; Description<\/strong><\/h2>\n\n\n\n<p>So, what does modifier RT indicate in medical billing? This laterality modifier reports that a healthcare provider performed a service or procedure on the right side of the body. Do you also think of the modifier RT as a surgical modifier? In reality, you can also apply it to the supplies&#8217; Healthcare Common Procedure Coding System (HCPCS) codes to specify that they are for the right side or structure of the body.<\/p>\n\n\n\n<p>In short, this modifier paints a more detailed picture, helping insurance companies identify procedures or services performed on the right eye, ear, arm, or leg.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Modifier LT<\/strong><strong> &#8211; Description<\/strong><\/h2>\n\n\n\n<p>Modifier LT describes the opposite side. In simple words, billing teams use this two-character code when a procedure or service is performed on the left side of the body. You can also use it to report supplies prescribed for the left arm, leg, ankle, or any other left structure.<\/p>\n\n\n\n<p>In short, like RT, modifier LT also ensures accurate claim processing by specifying laterality, helping you avoid denials and duplicate billing issues.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Scenarios Where <\/strong><strong>Modifiers RT &amp; LT<\/strong><strong> are Applicable<\/strong><\/h2>\n\n\n\n<p>Let\u2019s help you learn how to use these modifiers accurately with specific scenarios.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>When to Use <\/strong><strong>Modifier RT<\/strong><\/h3>\n\n\n\n<p>Here are a few examples where modifier RT is applicable:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Right Knee Joint Aspiration &amp; Injection<\/strong><\/h4>\n\n\n\n<p>Osteoarthritis is the most common type of arthritis, affecting <a href=\"https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/osteoarthritis\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">73% of people over 55<\/a>. Out of them, 60% are women. So, let\u2019s consider this scenario! Suppose a 58-year-old woman with osteoarthritis experiences increased swelling and stiffness in her right knee. She visits a primary care clinic seeking medication to reduce inflammation and pain.&nbsp;&nbsp;<\/p>\n\n\n\n<p>The physician evaluates her condition, reviews her medical history, and suspects fluid buildup. He performs joint aspiration without ultrasound guidance and administers an intra-articular injection to reduce inflammation. Since this procedure is performed on the right knee joint, the provider appends modifier RT to <a href=\"https:\/\/medibillmd.com\/blog\/cpt-code-20610\/\" target=\"_blank\" rel=\"noreferrer noopener\">CPT code 20610<\/a> when filing the claim.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Cataract Surgery on the Right Eye&nbsp;<\/strong><\/h4>\n\n\n\n<p>Now, let\u2019s consider a surgical procedure! Assume a 63-year-old man with diabetes develops a cataract\u2014clouding of the lens\u2014in his right eye. He visits an ophthalmology clinic due to declining vision. After a detailed evaluation, the doctor schedules cataract surgery.&nbsp;&nbsp;<\/p>\n\n\n\n<p>During the operation, the provider removes the cataract using phacoemulsification\u2014a procedure that emulsifies the eye\u2019s internal lens with ultrasonic waves\u2014and inserts an artificial lens. He then applies modifier RT to the procedural code (66984-RT) to indicate that the surgery was performed on the right eye.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Right Wrist-Hand Orthosis&nbsp;<\/strong><\/h4>\n\n\n\n<p>Want to use modifier RT with a durable medical equipment (DME) HCPCS code? Here is how you can do that! A 27-year-old plumber, due to repeated use of percussive tools such as a hammer, chisel, and mallet, experiences numbness and weakness in his right hand. After losing grip strength, he visits an outpatient clinic and is diagnosed with carpal tunnel syndrome.&nbsp;&nbsp;<\/p>\n\n\n\n<p>The doctor prescribes rest and a wrist brace to immobilize the affected hand. He then appends modifier RT to HCPCS code L3908 to indicate that the DME is for the patient\u2019s right wrist.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>When to Use <\/strong><strong>Modifier LT <\/strong><strong>&nbsp;<\/strong><\/h3>\n\n\n\n<p>Now, let\u2019s look at some applicable scenarios for modifier LT.&nbsp;&nbsp;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Left Eye Defect Repair&nbsp;&nbsp;<\/strong><\/h4>\n\n\n\n<p>Suppose a child with congenital ptosis (drooping of the eyelid) is brought to an ophthalmologist by his parents. Initially, the doctor considers delaying surgery since the child is only 1 year old. However, due to the severity of the condition, the drooping eyelid impacting the toddler&#8217;s vision, the provider decides to proceed with ptosis repair surgery.&nbsp;&nbsp;<\/p>\n\n\n\n<p>He tightens the levator muscle to lift the eyelid and then appends modifier LT to CPT code 67904 to specify that the surgery was performed on the left eye.&nbsp;&nbsp;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Replacement of a Left-Ear Cochlear Implant External Speech Processor&nbsp;<\/strong><\/h4>\n\n\n\n<p>A 60-year-old man with profound sensorineural hearing loss (hearing loss due to inner ear damage) has had bilateral cochlear implants for the past five years. However, his left ear implant&#8217;s external speech processor starts malfunctioning, making it difficult to hear intermittent sounds and understand speech.&nbsp;&nbsp;<\/p>\n\n\n\n<p>The man consults his regular otolaryngologist, who confirms the issue and submits a request for a replacement for the said component. The provider then uses the modifier LT with the appropriate HCPCS code (L8627) when filing the claim.&nbsp;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Imaging Service on the Left Knee&nbsp;<\/strong><\/h4>\n\n\n\n<p>Let\u2019s consider a diagnostic test! Suppose a 19-year-old football player arrives with pain in his left knee after getting tackled by opposing team members.<\/p>\n\n\n\n<p>After assessing the knee joint, the doctor suspects a dislocation and orders an X-ray to confirm his diagnosis. The billing team then appends modifier LT to CPT code 73560 to specify that the provider took one or two X-ray images of the left knee joint.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Modifiers RT &amp; LT<\/strong><strong> &#8211; Billing Guidelines<\/strong><\/h2>\n\n\n\n<p>By now, you must be quite familiar with RT and LT modifiers and understand how crucial they are for accurate claims processing. The key is to use them appropriately. Want to maximize your reimbursements?&nbsp;<\/p>\n\n\n\n<p>Explore appropriate and inappropriate uses of these laterality modifiers and follow their documentation and payer-specific requirements.&nbsp;&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Appropriate Uses of<\/strong><strong> RT &amp; LT Modifiers<\/strong><\/h3>\n\n\n\n<p>Modifiers RT and LT are appropriate only when:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A service or procedure code (CPT) or an item code (HCPCS) for anatomic structures that can be distinguished as left or right does not specify laterality.&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Inappropriate Uses of <\/strong><strong>RT &amp; LT Modifiers&nbsp;&nbsp;<\/strong><\/h3>\n\n\n\n<p>You should avoid using RT and LT modifiers with:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CPT or HCPCS codes that specifically include &#8220;unilateral&#8221; or &#8220;bilateral&#8221; in their description (as they already specify laterality).&nbsp;&nbsp;<\/li>\n\n\n\n<li>Bilateral procedures that require modifier 50.&nbsp;&nbsp;<\/li>\n\n\n\n<li>Procedures that are not side-specific.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Documentation Requirements&nbsp;&nbsp;<\/strong><\/h3>\n\n\n\n<p>You should support the use of RT and LT modifiers with proper documentation. This includes recording details such as:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The side of the body on which you performed the procedure.&nbsp;&nbsp;<\/li>\n\n\n\n<li>Operative reports&nbsp;<\/li>\n\n\n\n<li>Progress notes&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>In short, your documentation should be clear, complete, and concise to prevent insurance companies from rejecting your claims.&nbsp;&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Check Payer-Specific Requirements&nbsp;&nbsp;<\/strong><\/h3>\n\n\n\n<p>Insurers have varying policies for almost everything, including RT and LT modifiers. For example, the Centers for Medicare &amp; Medicaid Services (CMS) maintains a list of codes that require laterality modifiers. In simple words? Medicare will reject your claims without the appropriate RT or LT modifier with these codes.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Additionally, Medicare generally prefers Modifier 50 for bilateral procedures. However, some commercial payers may require you to use RT and LT modifiers even for bilateral procedures. Therefore, always verify payer-specific guidelines before submitting a claim.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Summary<\/strong><\/h2>\n\n\n\n<p>To summarize, RT and LT modifiers show laterality. Insurance companies require these modifiers with all those CPT or HCPCS codes that describe services performed on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Contralateral anatomic sites like bones and joints<\/li>\n\n\n\n<li>Paired body parts such as eyes and ears<\/li>\n\n\n\n<li>Extremities such as arms or legs<\/li>\n\n\n\n<li>Organs like kidneys or lungs<\/li>\n<\/ul>\n\n\n\n<p>Otherwise, they can reject your claims for being duplicates. We have covered both RT and LT modifiers in quite detail so you can understand their appropriate uses. In short, you can use the modifier RT if you have performed a service or prescribed an item for the right side of the body. On the other hand, you use the modifier LT if you have addressed the left side of the patient\u2019s body.<\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-link-color has-large-font-size wp-elements-abb47e80fabc22046fdcb7a89e86f1a7\" style=\"color:#045cb4;margin-bottom:var(--wp--preset--spacing--30)\"><strong>Frequently Asked Questions<\/strong><\/p>\n\n\n<div class=\"wp-block-uagb-faq uagb-faq__outer-wrap uagb-block-443b43bb uagb-faq-icon-row-reverse uagb-faq-layout-accordion uagb-faq-expand-first-true uagb-faq-inactive-other-true uagb-faq__wrap uagb-buttons-layout-wrap uagb-faq-equal-height     \" data-faqtoggle=\"true\" role=\"tablist\"><script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"@id\":\"https:\\\/\\\/medibillmd.com\\\/blog\\\/modifiers-rt-and-lt\\\/\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"<strong>Can we bill the LT and RT modifiers together?<\\\/strong>\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, you cannot bill RT and LT modifiers together on the same claim line. The best practice is to bill each service or item in two separate claim lines using RT and LT modifiers.\"}},{\"@type\":\"Question\",\"name\":\"<strong>Can modifier RT and 59 be used together?<\\\/strong>\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, you can use modifiers RT and 59 together in certain situations.\"}},{\"@type\":\"Question\",\"name\":\"<strong>Can modifier 51 be replaced by the RT and LT modifiers?<\\\/strong>\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, RT and LT modifiers cannot replace modifier 51. These laterality modifiers indicate which side of the body a healthcare provider performed a procedure or service. On the other hand, modifier 51 reports multiple non-E\\\/M services or procedures performed in the same session.\"}},{\"@type\":\"Question\",\"name\":\"<strong>Does CPT code 20550 need an RT or LT Modifier?<\\\/strong>\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, you should use the appropriate laterality (RT or LT modifier) when reporting CPT code 20550, which refers to a tendon sheath or ligament injection. These modifiers will help you clarify which side of the body the injection was performed on.\"}},{\"@type\":\"Question\",\"name\":\"<strong>Does Medicare accept modifiers LT and RT?<\\\/strong>\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, Medicare accepts and requires the use of LT and RT modifiers with numerous codes.\"}}]}<\/script><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-e15bfb78 \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\"><span class=\"uagb-question\"><strong>Can we bill the LT and RT modifiers together?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>No, you cannot bill RT and LT modifiers together on the same claim line. The best practice is to bill each service or item in two separate claim lines using RT and LT modifiers.<\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-996014c8 \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\"><span class=\"uagb-question\"><strong>Can modifier RT and 59 be used together?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>Yes, you can use modifiers RT and 59 together in certain situations.<\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-eeecc797 \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\"><span class=\"uagb-question\"><strong>Can modifier 51 be replaced by the RT and LT modifiers?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>No, RT and LT modifiers cannot replace modifier 51. These laterality modifiers indicate which side of the body a healthcare provider performed a procedure or service. On the other hand, modifier 51 reports multiple non-E\/M services or procedures performed in the same session.<\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-ba1ea06c \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\"><span class=\"uagb-question\"><strong>Does CPT code 20550 need an RT or LT Modifier?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>Yes, you should use the appropriate laterality (RT or LT modifier) when reporting CPT code 20550, which refers to a tendon sheath or ligament injection. These modifiers will help you clarify which side of the body the injection was performed on.<\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-ce10a82b \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\"><span class=\"uagb-question\"><strong>Does Medicare accept modifiers LT and RT?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>Yes, Medicare accepts and requires the use of LT and RT modifiers with numerous codes.<\/p><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>What do you know about laterality modifiers? You cannot skip these modifiers if you have performed a procedure on one [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":3174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","content-type":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3173","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-modifiers"],"uagb_featured_image_src":{"full":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM.jpeg",1200,720,false],"thumbnail":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM-150x150.jpeg",150,150,true],"medium":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM-300x180.jpeg",300,180,true],"medium_large":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM-768x461.jpeg",768,461,true],"large":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM-1024x614.jpeg",1024,614,true],"1536x1536":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM.jpeg",1200,720,false],"2048x2048":["https:\/\/medibillmd.com\/blog\/wp-content\/uploads\/2025\/03\/WhatsApp-Image-2025-03-18-at-3.11.55-AM.jpeg",1200,720,false]},"uagb_author_info":{"display_name":"Fred Allen","author_link":"https:\/\/medibillmd.com\/blog\/author\/fred-allen\/"},"uagb_comment_info":0,"uagb_excerpt":"What do you know about laterality modifiers? 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