ICD-10-CM 2027
ICD-10 code for Callus
From the official ICD-10-CM alphabetic index entry “Callus (infected)”. Page updated September 29, 2026.
About coding Callus
The ICD-10-CM code for Callus is L84 (Corns and callosities).
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.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific Callus codes (official index)
- bone
- excessive, following fracture - code as Sequelae of fracture
Common questions about Callus ICD-10 codes
What is the ICD-10 code for Callus?
- L84 — Corns and callosities.
Is L84 billable?
- Yes. L84 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L84 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L84 as a principal diagnosis.
Is L84 a CC or MCC?
- No. L84 is neither a CC nor an MCC under MS-DRG v44.0.