M79.A21Billable
Nontraumatic compartment syndrome of right lower extremity
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M79
- Effective date
- October 1, 2026
Related codes in category M79
M79Oth and unsp soft tissue disorders, not elsewhere classifiedM79.0Rheumatism, unspecifiedYesM79.1MyalgiaM79.10Myalgia, unspecified siteYesM79.11Myalgia of mastication muscleYesM79.12Myalgia of auxiliary muscles, head and neckYesM79.18Myalgia, other siteYesM79.2Neuralgia and neuritis, unspecifiedYesM79.3Panniculitis, unspecifiedYesM79.4Hypertrophy of (infrapatellar) fat padYesM79.5Residual foreign body in soft tissueYesM79.6Pain in limb, hand, foot, fingers and toes
Frequently asked questions
What is ICD-10 code M79.A21?
M79.A21 is an ICD-10-CM diagnosis code for Nontraumatic compartment syndrome of right lower extremity.
Is M79.A21 a billable code?
Yes. M79.A21 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is M79.A21 in?
M79.A21 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M79.A21 become effective?
M79.A21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M79.A21?
M79.A21 belongs to category M79, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.