L05 vs M79.3
L05 (Pilonidal cyst and sinus) compared with M79.3 (Panniculitis, unspecified), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. L05 carries an Excludes2 note covering M79.3: “panniculitis NOS (M79.3)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| L05Pilonidal cyst and sinus | M79.3Panniculitis, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Pilonidal cyst and sinus is a non-billable ICD-10-CM category code (L05). | Panniculitis, unspecified is a billable ICD-10-CM diagnosis code (M79.3). |
| Use additional code | code (B95-B97) to identify infectious agent. | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources