Question 1

What is ICD-10 code M62.552?

Accepted Answer

M62.552 is the ICD-10-CM diagnosis code for muscle wasting and atrophy, not elsewhere classified, left thigh. Loss of muscle mass and weakness in the left thigh due to disuse, injury, or disease, not caused by a specific named condition. M62.552 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering disorders of muscles (m60-m63).

M62.552 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Distinguish between muscle wasting in the thigh versus lower leg; ensure correct anatomical location is documented.

Question 2

Is M62.552 an HCC code?

Accepted Answer

No. M62.552 is a billable ICD-10-CM code but does not map to any payment HCC category under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can still be reported on Medicare Advantage encounter data submissions, but it does not contribute to the beneficiary's Risk Adjustment Factor (RAF) score and therefore does not affect the risk-adjusted capitation payment to the plan. V28 reached 100% phase-in for payment year 2026.

Question 3

Is M62.552 billable?

Accepted Answer

Yes. M62.552 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. M62.552 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 4

Which HCC does M62.552 map to under V28?

Accepted Answer

M62.552 does not map to a CMS-HCC V28 payment category. Check the current CMS-HCC V28 model file for payment year 2026 rather than an older V24 tip sheet.

Question 5

What does M62.552 pay in RAF?

Accepted Answer

M62.552 has no separately stated V28 community RAF weight. If it is not a V28 payment HCC, it adds nothing to a community RAF score.

Question 6

What is the V28 vs V24 difference for M62.552?

Accepted Answer

M62.552 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither community model rewards M62.552 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's V28/V24 community RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a community payment HCC.

Question 7

What documentation supports M62.552?

Accepted Answer

Distinguish between muscle wasting in the thigh versus lower leg; ensure correct anatomical location is documented Consider if this is related to immobility, neurological conditions, or systemic disease that should be coded separately M62.552 is not a CMS-HCC payment code, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

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M62.552

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M62.552 ICD-10-CM Code: Muscle wasting and atrophy, not elsewhere classified, left thigh

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M62.552

Is M62.552 an HCC code?

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Child Codes

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