ICD-10-CM 2027
ICD-10 code for Hydroadenitis
From the official ICD-10-CM alphabetic index entry “Hydroadenitis (axillaris) (suppurative)”. Page updated September 29, 2026.
About coding Hydroadenitis
The ICD-10-CM code for Hydroadenitis is L73.2 (Hidradenitis suppurativa).
Within L73 (other follicular disorders), L73.2 is specifically for Hidradenitis suppurativa. Related codes cover acne keloid (L73.0), Pseudofolliculitis barbae (L73.1), other specified follicular disorders (L73.8) and follicular disorder, unspecified (L73.9).
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 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), 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.
Common questions about Hydroadenitis ICD-10 codes
What is the ICD-10 code for Hydroadenitis?
- L73.2 — Hidradenitis suppurativa.
Is L73.2 billable?
- Yes. L73.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L73.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L73.2 as a principal diagnosis.
Is L73.2 a CC or MCC?
- No. L73.2 is neither a CC nor an MCC under MS-DRG v44.0.