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ICD-10-CM 2027 diagnosis code

L22Diaper dermatitis

✓ Billable / specific

L22 is a valid, billable ICD-10-CM code for diaper dermatitis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data

About L22

L22 is the ICD-10-CM diagnosis code for Diaper dermatitis. It belongs to block L20-L30 (dermatitis and eczema) 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), DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772) and DRG 795 (Normal Newborn, relative weight 0.2022), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), 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 691.0 (Diaper or napkin rash).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Diaper erythema
  • Diaper rash
  • Psoriasiform diaper rash

Notes that apply from higher levels

Instructions written at a parent level also apply to L22.

Broader instructions also apply from L20-L30 Dermatitis and eczema and Chapter 12: Diseases of the skin and subcutaneous tissue.

Alphabetic index entries

13 entries

Terms in the official ICD-10-CM index that lead to L22.

Codes whose notes reference L22

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

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 691.0Diaper or napkin rashexact

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 L22

Is L22 billable?

Yes. L22 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can L22 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict L22 as a principal diagnosis.

Is L22 a CC or MCC?

No. L22 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does L22 group to?

L22 is used in the MS-DRG v44.0 logic for MS-DRG 606 (Minor Skin Disorders with MCC), MS-DRG 607 (Minor Skin Disorders without MCC) and MS-DRG 795 (Normal Newborn). 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 L22?

The CMS General Equivalence Mappings map L22 to ICD-9-CM 691.0.