ICD-10-CM 2027
ICD-10 code for flank furuncle
From the official ICD-10-CM alphabetic index entry “Furuncle › flank”. Page updated September 29, 2026.
About coding flank furuncle
The ICD-10-CM code for flank furuncle is L02.227 (Furuncle of flank).
Within L02.22 (furuncle of trunk), L02.227 is specifically for furuncle of flank. Related codes cover abdominal wall (L02.221), back [any part, except buttock and flank] (L02.222), chest wall (L02.223), groin (L02.224), perineum (L02.225), umbilicus (L02.226) and unspecified (L02.229).
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.
Common questions about flank furuncle ICD-10 codes
What is the ICD-10 code for flank furuncle?
- L02.227 — Furuncle of flank.
Is L02.227 billable?
- Yes. L02.227 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L02.227 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L02.227 as a principal diagnosis.
Is L02.227 a CC or MCC?
- No. L02.227 is neither a CC nor an MCC under MS-DRG v44.0.