L27 ICD-10-CA category: Dermatitis due to substances taken internally
L27 isn’t a code on its own. Choose one of the 5 codes beneath it, the one the documentation supports.
Official description
L27Dermatitis due to substances taken internally
ICD-10-CA · Canada
Codes in L27
L27 isn’t a code on its own. Open the code that matches what the note documents.
Notes for L27
As CIHI prints them, with any note L27 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Adverse:• effect NOS of drugs (T88.7)• food reaction, except dermatitis (T78.0-T78.1)allergy NOS (T78.4)contact dermatitis (L23-L25)drug:• photoallergic response (L56.1)• phototoxic response (L56.0)urticaria (L50.-)
- Chronic (childhood) granulomatous disease (D71)dermatitis:• dry skin (L85.3)• factitial (L98.1)• gangrenosa (L08.0)• herpetiformis (L13.0)• perioral (L71.0)• stasis (I83.1-I83.2)radiation-related disorders of the skin and subcutaneous tissue (L55-L59)From L20-L30 Dermatitis and eczema
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)lipomelanotic reticulosis (I89.8)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)From Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
Note
- In this block the terms dermatitis and eczema are used synonymously and interchangeably.From L20-L30 Dermatitis and eczema
Where L27 sits
- 1ChapterChapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
- 2Block L20-L30Dermatitis and eczema
- 3Category L27Dermatitis due to substances taken internally
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is L27 a valid ICD-10-CA code?
No. L27 (Dermatitis due to substances taken internally) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 5 codes; record the one the documentation supports.
Where is L27 in ICD-10-CA?
L27 sits under L20-L30 Dermatitis and eczema, within Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99).
What coding notes apply to L27?
ICD-10-CA lists Excludes, Note notes for L27, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.