ICD-10-CM 2027
ICD-10 code for benign congenital myopathy
From the official ICD-10-CM alphabetic index entry “Myopathy › benign congenital”. Page updated September 29, 2026.
About coding benign congenital myopathy
The ICD-10-CM code for benign congenital myopathy is G71.20 (Congenital myopathy, unspecified).
Within G71.2, choose G71.20 (Congenital myopathy, unspecified) only when documentation doesn't support a more specific option: Nemaline myopathy (G71.21), centronuclear myopathy (G71.22) and other congenital myopathy (G71.29).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about benign congenital myopathy ICD-10 codes
What is the ICD-10 code for benign congenital myopathy?
- G71.20 — Congenital myopathy, unspecified.
Is G71.20 billable?
- Yes. G71.20 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G71.20 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G71.20 as a principal diagnosis.
Is G71.20 a CC or MCC?
- G71.20 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.