L84 — Corns and callosities

L84

ICD-10 Chapter 12: Skin & Subcutaneous Tissue — illustrative image — Chapter 12: Diseases of the skin and subcutaneous tissue (L00–L99) — illustrative image

What this code means

Corns and callosities are areas of thickened hard skin caused by repeated pressure or friction, usually on the feet.

Also called: corns, calluses, callosities.

When this code is used

Used for corns and callosities.

Where it sits in ICD-10-CM

Code L84 belongs to Chapter 12: Diseases of the skin and subcutaneous tissue, which covers codes L00–L99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Foot pain

Frequently asked questions

What is ICD-10-CM code L84?

L84 is the ICD-10-CM diagnosis code for “Corns and callosities”. Corns and callosities are areas of thickened hard skin caused by repeated pressure or friction, usually on the feet.

When is code L84 used?

Used for corns and callosities. It belongs to Chapter 12 of ICD-10-CM (Diseases of the skin and subcutaneous tissue).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.