ICD-10-CM 2027
ICD-10 code for fasciitis
From the official ICD-10-CM alphabetic index entry “Fasciitis”. Page updated September 29, 2026.
About coding fasciitis
The ICD-10-CM code for fasciitis is M72.9 (Fibroblastic disorder, unspecified). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M72.9.
Within M72, choose M72.9 (Fibroblastic disorder, unspecified) only when documentation doesn't support a more specific option: palmar fascial fibromatosis [Dupuytren] (M72.0), Knuckle pads (M72.1), plantar fascial fibromatosis (M72.2), Pseudosarcomatous fibromatosis (M72.4), necrotizing fasciitis (M72.6) and other fibroblastic disorders (M72.8).
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 fasciitis codes (official index)
- diffuse (eosinophilic) M35.4 — Diffuse (eosinophilic) fasciitis
- infective M72.8 — Other fibroblastic disorders
- necrotizing M72.6 — Necrotizing fasciitis
- necrotizing M72.6 — Necrotizing fasciitis
- nodular M72.4 — Pseudosarcomatous fibromatosis
- perirenal (with ureteral obstruction) N13.5 — Crossing vessel and stricture of ureter without hydronephrosis
- with infection N13.6 — Pyonephrosis
- plantar (foot) M67.A0 — Plantar fasciitis, foot
- specified NEC M72.8 — Other fibroblastic disorders
- traumatic (old) M72.8 — Other fibroblastic disorders
- current - code by site under Sprain
Common questions about fasciitis ICD-10 codes
What is the ICD-10 code for fasciitis?
- M72.9 — Fibroblastic disorder, unspecified. More specific codes apply when the documentation supports them: M35.4, M72.8, M72.6, M72.6 and others below.
What is the ICD-10 code for diffuse fasciitis?
- M35.4 — Diffuse (eosinophilic) fasciitis.
What is the ICD-10 code for infective fasciitis?
- M72.8 — Other fibroblastic disorders.
What is the ICD-10 code for necrotizing fasciitis?
- M72.6 — Necrotizing fasciitis.
What is the ICD-10 code for nodular fasciitis?
- M72.4 — Pseudosarcomatous fibromatosis.
What is the ICD-10 code for perirenal fasciitis?
- N13.5 — Crossing vessel and stricture of ureter without hydronephrosis.
What is the ICD-10 code for plantar fasciitis?
- M67.A0 — Plantar fasciitis, foot (header code; choose a more specific subcode).
Is M72.9 billable?
- Yes. M72.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M72.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M72.9 as a principal diagnosis.
Is M72.9 a CC or MCC?
- No. M72.9 is neither a CC nor an MCC under MS-DRG v44.0.