L27
Header — not billableDermatitis due to substances taken internally
The ICD-10 code for dermatitis due to substances taken internally is L27.
L27 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 5 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- allergy NOS (T78.40)
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under L27
- L27.0Generalized skin eruption due to drugs and medicaments taken internally
- L27.1Localized skin eruption due to drugs and medicaments taken internally
- L27.2Dermatitis due to ingested food
- L27.8Dermatitis due to other substances taken internally
- L27.9Dermatitis due to unspecified substance taken internally
Related codes in this category
- L20Atopic dermatitisnon-billable header
- L21Seborrheic dermatitisnon-billable header
- L22Diaper dermatitis
- L23Allergic contact dermatitisnon-billable header
- L24Irritant contact dermatitisnon-billable header
- L25Unspecified contact dermatitisnon-billable header
- L26Exfoliative dermatitis
- L28Lichen simplex chronicus and prurigonon-billable header
- L29Pruritusnon-billable header
- L30Other and unspecified dermatitisnon-billable header
- L27Dermatitis due to substances taken internallynon-billable header