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ICD-10-CM 2027 diagnosis code

L84Corns and callosities

✓ Billable / specific

L84 is a valid, billable ICD-10-CM code for corns and callosities. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Corn, ICD-10 code for Callus, ICD-10 code for Clavus, ICD-10 code for Heloma.

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 L84

L84 is the ICD-10-CM diagnosis code for Corns and callosities. It belongs to block L80-L99 (other disorders 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.

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.

Before ICD-10, this condition was coded in ICD-9-CM as 700 (Corns and callosities).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Callus
  • Clavus

Notes that apply from higher levels

Instructions written at a parent level also apply to L84.

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

Alphabetic index entries

6 entries

Terms in the official ICD-10-CM index that lead to L84.

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 →
  • 700Corns and callositiesexact

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 L84

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.

What DRG does L84 group to?

L84 is used in the MS-DRG v44.0 logic for MS-DRG 606 (Minor Skin Disorders with MCC) and MS-DRG 607 (Minor Skin Disorders 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 L84?

The CMS General Equivalence Mappings map L84 to ICD-9-CM 700.