2027 ICD-10-CM Diagnosis Code G71Primary disorders of muscles

ICD-10-CM Codes›G00–G99›G70-G73›G71

ICD-10-CM G71
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G71 is a non-billable ICD-10-CM category code for primary disorders of muscles, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G71.00, G71.01, G71.02, and G71.031.

Code Identity

ICD-10-CM Code
G71
Billable Status
No — Non-Billable Category
Code Describes
Primary disorders of muscles
Short Description
Primary disorders of muscles
Same as the full description in the CMS dataset.
Chapter
G70-G73
Diseases of myoneural junction and muscle

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG70-G73Diseases of myoneural junction and muscle
CategoryG71Primary disorders of muscles
This CodeG71Primary disorders of muscles

Specific Coding for Primary disorders of musclesOverview

Non-specific codes like G71 require more characters. Use one of these billable codes instead:

  • G71.0 for Muscular dystrophy

  • Use G71.00 for Muscular dystrophy, unspecified

  • Use G71.01 for Duchenne or Becker muscular dystrophy

  • Use G71.02 for Facioscapulohumeral muscular dystrophy

  • G71.03 for Limb girdle muscular dystrophies

  • Use G71.09 for Other specified muscular dystrophies

  • G71.1 for Myotonic disorders

  • Use G71.11 for Myotonic muscular dystrophy

  • Use G71.12 for Myotonia congenita

  • Use G71.13 for Myotonic chondrodystrophy

  • Use G71.14 for Drug induced myotonia

  • Use G71.19 for Other specified myotonic disorders

  • G71.2 for Congenital myopathies

  • Use G71.20 for Congenital myopathy, unspecified

  • Use G71.21 for Nemaline myopathy

  • G71.22 for Centronuclear myopathy

  • Use G71.29 for Other congenital myopathy

  • Use G71.3 for Mitochondrial myopathy, not elsewhere classified

  • Use G71.8 for Other primary disorders of muscles

  • Use G71.9 for Primary disorder of muscle, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G71: its own notes plus those printed at Chapter 6. A note printed at a category, block or chapter applies to every code under it.

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.

On G71 itself
  • arthrogryposis multiplex congenita (Q74.3)
  • metabolic disorders (E70-E88)
  • myositis (M60.-)
From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name G71, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming G71: its condition is not part of those codes, and both may be reported when the patient has both.

Code First 1

These codes say to code first a condition named in the note, and G71 is one of the conditions named.

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.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G71Overview

What is the ICD-10 code for primary disorders of muscles?

G71 is the ICD-10-CM category for primary disorders of muscles, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is G71 (Primary disorders of muscles) a billable code?

No. This is a category header that groups the codes for primary disorders of muscles, and headers cannot be submitted on claims. Claims for primary disorders of muscles need a more specific code from this category, such as G71.00, G71.01, and G71.02.