U.S. ICD-10-CM · FY 2027

L27 ICD-10-CM Code: Dermatitis due to substances taken internally

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

L27

Dermatitis due to substances taken internally

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where L27 sits

  1. 1

    Chapter 12

    Diseases of the skin and subcutaneous tissue (L00-L99)

  2. 2

    Section

    Dermatitis and eczema (L20-L30)

  3. 3

    Category L27

    Dermatitis due to substances taken internally

  4. 4

    Code L27

    Dermatitis due to substances taken internally

More specific choices

Codes under L27

L27 is a non-billable category. Choose the child code that best matches the documented diagnosis.

L27.0

Generalized skin eruption due to drugs and medicaments taken internally

L27.1

Localized skin eruption due to drugs and medicaments taken internally

L27.2

Dermatitis due to ingested food

L27.8

Dermatitis due to other substances taken internally

L27.9

Dermatitis due to unspecified substance taken internally

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for L27.

Code first

No “code first” instruction is listed for L27.

Use additional code

No “use additional code” instruction is listed for L27.

Excludes1

Conditions that should not be reported together with this code.

  • allergy NOS (T78.40)

Excludes2

Conditions not included here that may be reported separately when present.

  • 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.-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code L27 mean?

L27 is the FY 2027 U.S. ICD-10-CM code for “Dermatitis due to substances taken internally.”

Is L27 a billable or specific ICD-10-CM code?

No. L27 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is L27 located in ICD-10-CM?

L27 is listed in Chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99), within Dermatitis and eczema (L20-L30) (L20–L30), under category L27, Dermatitis due to substances taken internally.

What coding notes are listed for L27?

No inclusion terms are listed for L27 in this reference record. No code-first instruction is listed. Excludes1 notes: allergy NOS (T78.40). Excludes2 notes: 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.-).

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