ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group G71 includes primary muscle disorders such as inherited muscular dystrophies, inflammatory myopathies, and other myopathies that primarily affect skeletal muscle function, strength, and structure. These ICD-10-CM diagnosis codes are used to document clinical presentations like progressive weakness, exercise intolerance, myalgias, and laboratory or biopsy-confirmed muscle pathology, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM G71 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM G71: Primary Disorders Of Muscles Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group G71 covers primary disorders that primarily affect skeletal muscle function, such as inherited and acquired myopathies and muscular dystrophies. These conditions target the muscular system and can cause weakness, pain, and impaired mobility. Accurate coding is important for appropriate reimbursement and reflects the clinical complexity and resource needs of muscle disease care.

When to Use

Use a code from this group when the primary clinical problem is a disorder of skeletal muscle documented by clinical examination, laboratory testing, electromyography, or muscle biopsy. Select the specific code that best reflects the confirmed diagnosis, disease severity, and any documented complications or systemic involvement.

ICD-10-CM Codes

28 rows

ICD-10-CM Code	Description
G71.00	Muscular dystrophy, unspecified
G71.01	Duchenne or Becker muscular dystrophy
G71.02	Facioscapulohumeral muscular dystrophy
G71.031	Autosomal dominant limb girdle muscular dystrophy
G71.032	Autosomal recessive limb girdle muscular dystrophy due to calpain-3 dysfunction
G71.033	Limb girdle muscular dystrophy due to dysferlin dysfunction
G71.0340	Limb girdle muscular dystrophy due to sarcoglycan dysfunction, unspecified
G71.0341	Limb girdle muscular dystrophy due to alpha sarcoglycan dysfunction
G71.0342	Limb girdle muscular dystrophy due to beta sarcoglycan dysfunction
G71.0349	Limb girdle muscular dystrophy due to other sarcoglycan dysfunction
G71.035	Limb girdle muscular dystrophy due to anoctamin-5 dysfunction
G71.036	Limb girdle muscular dystrophy due to fukutin related protein dysfunction
G71.038	Other limb girdle muscular dystrophy
G71.039	Limb girdle muscular dystrophy, unspecified
G71.09	Other specified muscular dystrophies
G71.11	Myotonic muscular dystrophy
G71.12	Myotonia congenita
G71.13	Myotonic chondrodystrophy
G71.14	Drug induced myotonia
G71.19	Other specified myotonic disorders

Showing 1–20 of 28

DRG Codes

3 rows

DRG Code	Description
091	Other Disorders of Nervous System with MCC
092	Other Disorders of Nervous System with CC
093	Other Disorders of Nervous System without CC/MCC

Typical Clinical Scenarios

An adult presents to the emergency department with acute onset painless proximal muscle weakness developing over days to weeks, difficulty rising from a chair and climbing stairs, and elevated creatine kinase on labs. The clinician performs neurologic exam showing symmetric proximal weakness and orders myositis serologies and MRI; a primary inflammatory myopathy is suspected and a code from this muscle disorder group is assigned to capture the underlying myopathy. Typical codes: G71.31, G71.39
A middle‑aged patient in outpatient neurology has months of slowly progressive distal and proximal muscle weakness with family history of similar symptoms; genetic testing confirms a congenital or hereditary myopathy. The visit documents chronic neuromuscular weakness, baseline functional limitations, and ongoing management planning, so a hereditary primary muscle disorder code from the group is used for longitudinal care. Typical codes: G71.2, G71.1
A hospitalized patient with known systemic autoimmune disease develops steroid‑associated myopathy characterized by new proximal muscle weakness after prolonged glucocorticoid therapy; the admission is for worsening mobility and falls. The treating team documents that the muscle weakness is a complication of medication use and assigns a specific primary muscle disorder code to reflect the iatrogenic myopathy as a comorbidity affecting care. Typical codes: G71.0, G71.9

ICD-10-CM Code For Myasthenia Gravis And Other Myoneural Disorders: Group Overview

G72-OTHER-AND-UNSPECIFIED-MYOPATHIES

ICD-10-CM Code For Other And Unspecified Myopathies: Group Overview

G73-DISORDERS-OF-MYONEURAL-JUNCTION-AND-MUSCLE

ICD-10-CM Code For Disorders Of Myoneural Junction And Muscle In Diseases Classified Elsewhere: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

28 rows

ICD-10-CM Code	Description
G71.00	Muscular dystrophy, unspecified
G71.01	Duchenne or Becker muscular dystrophy
G71.02	Facioscapulohumeral muscular dystrophy
G71.031	Autosomal dominant limb girdle muscular dystrophy
G71.032	Autosomal recessive limb girdle muscular dystrophy due to calpain-3 dysfunction
G71.033	Limb girdle muscular dystrophy due to dysferlin dysfunction
G71.0340	Limb girdle muscular dystrophy due to sarcoglycan dysfunction, unspecified
G71.0341	Limb girdle muscular dystrophy due to alpha sarcoglycan dysfunction
G71.0342	Limb girdle muscular dystrophy due to beta sarcoglycan dysfunction
G71.0349	Limb girdle muscular dystrophy due to other sarcoglycan dysfunction
G71.035	Limb girdle muscular dystrophy due to anoctamin-5 dysfunction
G71.036	Limb girdle muscular dystrophy due to fukutin related protein dysfunction
G71.038	Other limb girdle muscular dystrophy
G71.039	Limb girdle muscular dystrophy, unspecified
G71.09	Other specified muscular dystrophies
G71.11	Myotonic muscular dystrophy
G71.12	Myotonia congenita
G71.13	Myotonic chondrodystrophy
G71.14	Drug induced myotonia
G71.19	Other specified myotonic disorders

Showing 1–20 of 28

DRG Codes

3 rows

DRG Code	Description
091	Other Disorders of Nervous System with MCC
092	Other Disorders of Nervous System with CC
093	Other Disorders of Nervous System without CC/MCC

Typical Clinical Scenarios

An adult presents to the emergency department with acute onset painless proximal muscle weakness developing over days to weeks, difficulty rising from a chair and climbing stairs, and elevated creatine kinase on labs. The clinician performs neurologic exam showing symmetric proximal weakness and orders myositis serologies and MRI; a primary inflammatory myopathy is suspected and a code from this muscle disorder group is assigned to capture the underlying myopathy. Typical codes: G71.31, G71.39
A middle‑aged patient in outpatient neurology has months of slowly progressive distal and proximal muscle weakness with family history of similar symptoms; genetic testing confirms a congenital or hereditary myopathy. The visit documents chronic neuromuscular weakness, baseline functional limitations, and ongoing management planning, so a hereditary primary muscle disorder code from the group is used for longitudinal care. Typical codes: G71.2, G71.1
A hospitalized patient with known systemic autoimmune disease develops steroid‑associated myopathy characterized by new proximal muscle weakness after prolonged glucocorticoid therapy; the admission is for worsening mobility and falls. The treating team documents that the muscle weakness is a complication of medication use and assigns a specific primary muscle disorder code to reflect the iatrogenic myopathy as a comorbidity affecting care. Typical codes: G71.0, G71.9

ICD-10-CM Code For Myasthenia Gravis And Other Myoneural Disorders: Group Overview

G72-OTHER-AND-UNSPECIFIED-MYOPATHIES

ICD-10-CM Code For Other And Unspecified Myopathies: Group Overview

G73-DISORDERS-OF-MYONEURAL-JUNCTION-AND-MUSCLE

ICD-10-CM Code For Disorders Of Myoneural Junction And Muscle In Diseases Classified Elsewhere: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview

Sign up for ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview policy alerts

ICD-10-CM G71: Primary Disorders Of Muscles Overview

ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview

Sign up for ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview policy alerts

ICD-10-CM G71: Primary Disorders Of Muscles Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview

Sign up for ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview policy alerts

ICD-10-CM G71: Primary Disorders Of Muscles Overview

ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview

Sign up for ICD-10-CM Code For Primary Disorders Of Muscles: Group Overview policy alerts

ICD-10-CM G71: Primary Disorders Of Muscles Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM code group covers primary disorders of skeletal muscle?

How should I document muscular dystrophy variants in coding?

Which codes cover limb girdle muscular dystrophy subtypes?

Where are congenital and congenital myopathy codes found in this group?

How does coding within `G71` relate to reimbursement DRGs?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM code group covers primary disorders of skeletal muscle?

How should I document muscular dystrophy variants in coding?

Which codes cover limb girdle muscular dystrophy subtypes?

Where are congenital and congenital myopathy codes found in this group?

How does coding within `G71` relate to reimbursement DRGs?

References