ICD-10-CM 2027
ICD-10 code for muscle diastasis
From the official ICD-10-CM alphabetic index entry “Diastasis › muscle”. Page updated September 29, 2026.
About coding muscle diastasis
The ICD-10-CM code for muscle diastasis is M62.00 (Separation of muscle (nontraumatic), unspecified site). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M62.00.
Within M62.0, choose M62.00 (unspecified site) only when documentation doesn't support a more specific option: shoulder (M62.01), upper arm (M62.02), forearm (M62.03), hand (M62.04), thigh (M62.05), lower leg (M62.06), ankle and foot (M62.07) and other site (M62.08).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 557 (Tendonitis, Myositis and Bursitis with MCC, relative weight 1.489) and DRG 558 (Tendonitis, Myositis and Bursitis without MCC, relative weight 0.8875), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific muscle diastasis codes (official index)
- ankle M62.07 — Separation of muscle (nontraumatic), ankle and foot
- congenital Q79.8 — Other congenital malformations of musculoskeletal system
- foot M62.07 — Separation of muscle (nontraumatic), ankle and foot
- forearm M62.03 — Separation of muscle (nontraumatic), forearm
- hand M62.04 — Separation of muscle (nontraumatic), hand
- lower leg M62.06 — Separation of muscle (nontraumatic), lower leg
- pelvic region M62.05 — Separation of muscle (nontraumatic), thigh
- shoulder region M62.01 — Separation of muscle (nontraumatic), shoulder
- specified site NEC M62.08 — Separation of muscle (nontraumatic), other site
- thigh M62.05 — Separation of muscle (nontraumatic), thigh
- upper arm M62.02 — Separation of muscle (nontraumatic), upper arm
Common questions about muscle diastasis ICD-10 codes
What is the ICD-10 code for muscle diastasis?
- M62.00 — Separation of muscle (nontraumatic), unspecified site. More specific codes apply when the documentation supports them: M62.07, Q79.8, M62.07, M62.03 and others below.
What is the ICD-10 code for ankle muscle diastasis?
- M62.07 — Separation of muscle (nontraumatic), ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for congenital muscle diastasis?
- Q79.8 — Other congenital malformations of musculoskeletal system.
What is the ICD-10 code for foot muscle diastasis?
- M62.07 — Separation of muscle (nontraumatic), ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for forearm muscle diastasis?
- M62.03 — Separation of muscle (nontraumatic), forearm (header code; choose a more specific subcode).
What is the ICD-10 code for hand muscle diastasis?
- M62.04 — Separation of muscle (nontraumatic), hand (header code; choose a more specific subcode).
What is the ICD-10 code for lower leg muscle diastasis?
- M62.06 — Separation of muscle (nontraumatic), lower leg (header code; choose a more specific subcode).
Is M62.00 billable?
- Yes. M62.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M62.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M62.00 as a principal diagnosis.
Is M62.00 a CC or MCC?
- No. M62.00 is neither a CC nor an MCC under MS-DRG v44.0.