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

ICD-10-CM Diagnosis Code (2025)

Official Description for L27

Dermatitis due to substances taken internally

Coding Notes & Guidelines for L27

Excludes1: Not Coded Here

allergy NOS (T78.40)

Excludes2: Not Included Here
  • 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.-)
Excludes2: Not Included Here

dermatitis due to food in contact with skin (L23.6, L24.6, L25.4)

Use Additional Code

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

Use Additional Code

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

Child Codes (More Specific Codes for L27):

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

About ICD-10-CM Code L27 (Dermatitis due to substances taken internally)

ICD-10-CM code L27 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM L27 became effective on October 1, 2024.

This page provides detailed information about L27 - Dermatitis due to substances taken internally. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Dermatitis due to substances taken internally.