M72.6 vs M72.8
M72.6 (Necrotizing fasciitis) compared with M72.8 (Other fibroblastic disorders), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. M72.8 carries an Excludes1 note covering M72.6: “necrotizing fasciitis (M72.6)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| M72.6Necrotizing fasciitis | M72.8Other fibroblastic disorders | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Necrotizing fasciitis is a billable ICD-10-CM diagnosis code (M72.6). | Other fibroblastic disorders is a billable ICD-10-CM diagnosis code (M72.8). |
| Includes | — | Abscess of fascia Fasciitis NEC Other infective fasciitis |
| Use additional code | code (B95.-, B96.-) to identify causative organism | code to (B95.-, B96.-) identify causative organism |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources