L27

L27: Dermatitis due to substances taken internally

Non-billable headerICD-10-CM

L27 is a non-billable header ICD-10-CM code for dermatitis due to substances taken internally. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

allergy NOS (T78.40)

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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.-)

Other codes that can never be billed with L27

Their own Excludes1 notes name this code, so the conflict is not listed above.

T61Toxic effect of noxious substances eaten as seafood
T62Toxic effect of other noxious substances eaten as food
T78.4Other and unspecified allergy

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead L27

5 child codes. Green means billable.