L27 — Dermatitis due to substances taken internally
Is L27 billable?
No — L27 is a non-billable header code. L27 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 5 billable codes beneath L27.
Billable codes under this header
- 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
L27 at a glance
| Code | L27 |
|---|---|
| Description | Dermatitis due to substances taken internally |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with L27 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- allergy NOS (T78.40)
Excludes2 — not included here
The conditions below are not part of L27, but a patient may have both at the same time. When documentation supports it, L27 and the excluded code may both be reported.
Excludes2 — not included here — inherited from Chapter 12
The conditions below are not part of L27, but a patient may have both at the same time. When documentation supports it, L27 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- lipomelanotic reticulosis (I89.8)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- viral warts (B07.-)
Excludes2 — not included here — inherited from L20-L30
The conditions below are not part of L27, but a patient may have both at the same time. When documentation supports it, L27 and the excluded code may both be reported.
What codes fall under L27? (5)
- 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
How long has L27 existed?
L27 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.