G73.7 ICD-10-CM Code: Myopathy in diseases classified elsewhere
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Diseases of myoneural junction and muscle (G70-G73)
G73.7
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceMyopathy in diseases classified elsewhere
Muscle weakness or disease that develops as a result of another medical condition classified elsewhere in the ICD-10 system.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for G73.7 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for G73.7 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G73.7 in this effective period.
Excludes 1
Official- myopathy in:
- rheumatoid arthritis (M05.32)
- sarcoidosis (D86.87)
- scleroderma (M34.82)
- Sjögren syndrome (M35.03)
Code First
Official- underlying disease, such as:
- glycogen storage disease (E74.0-)
- hyperparathyroidism (E21.0, E21.3)
- hypoparathyroidism (E20.-)
- lipid storage disorders (E75.-)
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G73.7 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G73.7 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is G73.7 an HCC code?
No. G73.7 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
G73.7 is the ICD-10-CM diagnosis code for myopathy in diseases classified elsewhere. Muscle weakness or disease that develops as a result of another medical condition classified elsewhere in the ICD-10 system. G73.7 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering diseases of myoneural junction and muscle (g70-g73).
G73.7 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.
Always code the underlying disease first, then use G73.7 as a secondary code to indicate the myopathy is a manifestation of that disease.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G73.7 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Always code the underlying disease first, then use G73.7 as a secondary code to indicate the myopathy is a manifestation of that disease
- •Common underlying conditions include endocrine disorders, infections, and systemic diseases