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ICD-10-CM 2027 diagnosis code

L02.522Furuncle left hand

✓ Billable / specific

L02.522 is a valid, billable ICD-10-CM code for furuncle left hand. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About L02.522

L02.522 is the ICD-10-CM diagnosis code for furuncle left hand. 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 L02.52 (furuncle hand), L02.522 is specifically for furuncle left hand. Related codes cover right hand (L02.521) and unspecified hand (L02.529).

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 has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 680.4 (carbuncle and furuncle of hand).

Notes that apply from higher levels

Instructions written at a parent level also apply to L02.522.

› 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.

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

ICD-9-CM equivalent

Converter →
  • 680.4Carbuncle and furuncle of handapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about L02.522

Is L02.522 billable?

Yes. L02.522 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can L02.522 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict L02.522 as a principal diagnosis.

Is L02.522 a CC or MCC?

No. L02.522 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does L02.522 group to?

L02.522 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.

What is the ICD-9 code for L02.522?

The CMS General Equivalence Mappings map L02.522 to ICD-9-CM 680.4.