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ICD-10-CM 2027 diagnosis code

L27.1Localized skin eruption due to drugs and medicaments taken internally

✓ Billable / specific

L27.1 is a valid, billable ICD-10-CM code for localized skin eruption due to drugs and medicaments taken internally. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Loc skin eruption due to drugs and meds taken internally

Looking up by condition? See ICD-10 code for Erythrodysesthesia, ICD-10 code for Hand-foot syndrome.

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 L27.1

L27.1 is the ICD-10-CM diagnosis code for localized skin eruption due to drugs and medicaments taken internally. It belongs to category L27 (dermatitis due to substances taken internally), 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.

Within L27 (dermatitis due to substances taken internally), L27.1 is specifically for localized skin eruption due to drugs and medicaments taken internally. Related codes cover generalized skin eruption due to drugs and medicaments taken internally (L27.0), dermatitis due to ingested food (L27.2), dermatitis due to other substances taken internally (L27.8) and dermatitis due to unspecified substance taken internally (L27.9).

Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).

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), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), 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 693.0 (dermatitis due to drugs and medicines taken internally).

Coding notes

Use additional codeAdd a secondary code to fully describe the condition
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Notes that apply from higher levels

Instructions written at a parent level also apply to L27.1.

› From L27 Dermatitis due to substances taken internally
Excludes1
Excludes2
  • adverse food reaction, except dermatitis (T78.0-T78.1)
  • contact dermatitis (L23-L25)
  • drug photoallergic response (L56.1)
  • drug phototoxic response (L56.0)
  • urticaria (L50.-)

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

Alphabetic index entries

7 entries

Terms in the official ICD-10-CM index that lead to L27.1.

Codes whose notes reference L27.1

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

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

ICD-9-CM equivalent

Converter →
  • 693.0Dermatitis due to drugs and medicines taken internallyapproximate

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 L27.1

Is L27.1 billable?

Yes. L27.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can L27.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict L27.1 as a principal diagnosis.

Is L27.1 a CC or MCC?

No. L27.1 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does L27.1 group to?

L27.1 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), MS-DRG 791 (Prematurity with Major Problems) and MS-DRG 793 (Full Term Neonate with Major Problems). 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 L27.1?

The CMS General Equivalence Mappings map L27.1 to ICD-9-CM 693.0.