2027 ICD-10-CM Diagnosis Code G73.7Myopathy in diseases classified elsewhere
ICD-10-CM Codes›G00–G99›G70-G73›G73
- Billable — Valid for Submission
- Not Chronic
G73.7 is a billable ICD-10-CM diagnosis code for myopathy in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 91 through 93. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Myopathies.
G73.7 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the ESRD (V21) category 75 for payment year 2027.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for G73.7.
Medicare Risk Adjustment (HCC)Billing
G73.7 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Amyloid myopathy
- Autoimmune inflammation of skeletal muscle
- Autoimmune necrotizing myopathy
- Carcinomatous myopathic syndrome
- Chronic myopathy with hypocalcemia and hypophosphatemia
- Endocrine myopathy
- Glycogen storage disease, muscular form
- Human immunodeficiency virus myopathy
- Hypermetabolism
- Hypothyroid myopathy
- Idiopathic inflammatory myopathy
- Infiltrative cardiomyopathy
- Lipid storage myopathy
- Luft's hypermetabolic myopathy
- Metabolic myopathy
- Metabolic myopathy due to lactate transporter defect
- Mitochondrial-lipid-glycogen storage myopathy
- Myopathy co-occurrent and due to hypercalcemia
- Myopathy due to calcium deficiency
- Myopathy due to Cushing's syndrome
- Myopathy due to magnesium deficiency
- Myopathy due to paraneoplastic syndrome
- Myopathy due to polyarteritis nodosa
- Myopathy in acromegaly
- Myopathy in Addison's disease
- Myopathy in Cushing's disease
- Myopathy in hyperparathyroidism
- Myopathy in hypoparathyroidism
- Myopathy in hypopituitarism
- Myopathy in myasthenia gravis
- Myopathy in osteomalacia
- Neutral lipid storage disease with myopathy
- Nutritional myopathy
- Polyglucosan body myopathy type 1
- Polyglucosan body myopathy type 2
- Potassium depletion myopathy
- Primary familial amyloid myopathy
- Primary sporadic amyloid myopathy
- Protein deficiency myopathy
- Secondary myopathy
- Thyrotoxic myopathy
- Triglyceride deposit cardiomyovasculopathy
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to G73.7: its own notes plus those printed at Chapter 6. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Code First
The underlying condition named in the note is sequenced before this code.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name G73.7, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming G73.7: they are not reported together with it, unless the two conditions are unrelated.
Code First 1
These codes say to code first a condition named in the note, and G73.7 is one of the conditions named.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Muscle Disorders
Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert G73.7 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About G73.7Overview
What is the ICD-10 code for myopathy in diseases classified elsewhere?
The ICD-10-CM code for myopathy in diseases classified elsewhere is G73.7 (sometimes written as G737). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is G73.7 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report myopathy in diseases classified elsewhere on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does G73.7 group to?
On inpatient claims, myopathy in diseases classified elsewhere maps to MS-DRG 91, 92, 93, with relative weights from 0.7783 to 1.7050 depending on complications. Higher weights mean higher Medicare reimbursement.
Can G73.7 be a principal diagnosis?
No. This is a manifestation code: myopathy in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
Can G73.7 be reported with M05.32?
Not as a rule. The Excludes1 note on G73.7 lists "rheumatoid arthritis (M05.32)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
Does G73.7 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: G73.7 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the ESRD (V21) category 75 (Polyneuropathy).
