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ICD-10-CM 2027 diagnosis code

L02.227Furuncle of flank

✓ Billable / specific

L02.227 is a valid, billable ICD-10-CM code for furuncle of flank. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2026 (effective October 1, 2025). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About L02.227

L02.227 is the ICD-10-CM diagnosis code for furuncle of flank. It belongs to category L02 (cutaneous abscess, furuncle and carbuncle), block L00-L08 (infections of the skin and subcutaneous tissue) and chapter 12 (diseases of the skin and subcutaneous tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

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.

In MS-DRG v44.0, it is part of the grouping logic for DRG 602 (Cellulitis with MCC, relative weight 1.4273) and DRG 603 (Cellulitis without MCC, relative weight 0.8635), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It was added in FY2026, effective October 1, 2025.

Notes that apply from higher levels

Instructions written at a parent level also apply to L02.227.

› From L02.2 Cutaneous abscess, furuncle and carbuncle of trunk
Excludes1
  • non-newborn omphalitis (L08.82)
  • omphalitis of newborn (P38.-)
Excludes2
  • abscess of breast (N61.1)
  • abscess of buttocks (L02.31)
  • abscess of female external genital organs (N76.4)
  • abscess of male external genital organs (N48.2, N49.-)
  • abscess of hip (L02.4)
› From L02 Cutaneous abscess, furuncle and carbuncle
Excludes2
  • abscess of anus and rectal regions (K61.-)
  • abscess of female genital organs (external) (N76.4)
  • abscess of male genital organs (external) (N48.2, N49.-)
Use additional code
  • code to identify organism (B95-B96)

Broader instructions also apply from L00-L08 Infections of the skin and subcutaneous tissue and Chapter 12: Diseases of the skin and subcutaneous tissue.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to L02.227.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 09 · Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2026 (effective 10/1/2025): Added
  • No changes since FY2026.

Common questions about L02.227

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.

What DRG does L02.227 group to?

L02.227 is used in the MS-DRG v44.0 logic for MS-DRG 602 (Cellulitis with MCC) and MS-DRG 603 (Cellulitis without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.