Primary disorders of muscles
In Diseases of myoneural junction and muscle (G70-G73), chapter 6: Diseases of the Nervous System
28 billable codes under G71: 5 are a CC; 21 map to HCC 197 (Muscular Dystrophy).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers default dominant or nondominant side for hemiplegia and monoplegia, and use and sequencing of G89 pain codes, including postoperative, chronic, and neoplasm-related pain.
- Dominant/nondominant side (page 45)
- Pain - Category G89 (page 45)
All codes under G71
G71 can't be used on a claim. Pick a billable code below; grey headings group them.
- G71.0Muscular dystrophy
- G71.00Muscular dystrophy, unspecified
- G71.01Duchenne or Becker muscular dystrophy
- G71.02Facioscapulohumeral muscular dystrophy
- G71.03Limb girdle muscular dystrophies
- G71.031Autosomal dominant limb girdle muscular dystrophy
- G71.032Autosomal recessive limb girdle muscular dystrophy due to calpain-3 dysfunction
- G71.033Limb girdle muscular dystrophy due to dysferlin dysfunction
- G71.034Limb girdle muscular dystrophy due to sarcoglycan dysfunction
- G71.0340Limb girdle muscular dystrophy due to sarcoglycan dysfunction, unspecified
- G71.0341Limb girdle muscular dystrophy due to alpha sarcoglycan dysfunction
- G71.0342Limb girdle muscular dystrophy due to beta sarcoglycan dysfunction
- G71.0349Limb girdle muscular dystrophy due to other sarcoglycan dysfunction
- G71.035Limb girdle muscular dystrophy due to anoctamin-5 dysfunction
- G71.036Limb girdle muscular dystrophy due to fukutin related protein dysfunction
- G71.038Other limb girdle muscular dystrophy
- G71.039Limb girdle muscular dystrophy, unspecified
- G71.09Other specified muscular dystrophies
- G71.1Myotonic disorders
- G71.11Myotonic muscular dystrophy
- G71.12Myotonia congenita
- G71.13Myotonic chondrodystrophy
- G71.14Drug induced myotonia
- G71.19Other specified myotonic disorders
- G71.2Congenital myopathies
- G71.20Congenital myopathy, unspecified
- G71.21Nemaline myopathy
- G71.22Centronuclear myopathy
- G71.220X-linked myotubular myopathy
- G71.228Other centronuclear myopathy
- G71.29Other congenital myopathy
- G71.3Mitochondrial myopathy, not elsewhere classified
- G71.8Other primary disorders of muscles
- G71.9Primary disorder of muscle, unspecified
G71 MS-DRGs
As the principal diagnosis, all 28 billable codes under G71 group to MS-DRG 091, 092, or 093 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Other codes that refer to G71
Notes on these codes point to G71.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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 more about muscle disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.