ICD-10-CM 2027
ICD-10 code for head furuncle
From the official ICD-10-CM alphabetic index entry “Furuncle › head”. Page updated September 29, 2026.
About coding head furuncle
The ICD-10-CM code for head furuncle is L02.821 (Furuncle of head [any part, except face]). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on L02.821.
Within L02.82 (furuncle of other sites), L02.821 is specifically for furuncle of head [any part, except face]. Related codes cover other sites (L02.828).
Use an additional code to identify organism (B95-B96).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific head furuncle codes (official index)
- face L02.02 — Furuncle of face
Common questions about head furuncle ICD-10 codes
What is the ICD-10 code for head furuncle?
- L02.821 — Furuncle of head [any part, except face]. More specific codes apply when the documentation supports them: L02.02.
What is the ICD-10 code for face head furuncle?
- L02.02 — Furuncle of face.
Is L02.821 billable?
- Yes. L02.821 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L02.821 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L02.821 as a principal diagnosis.
Is L02.821 a CC or MCC?
- No. L02.821 is neither a CC nor an MCC under MS-DRG v44.0.