L43.2 ICD-10-CA code: Lichenoid drug reaction
L43.2 is the ICD-10-CA code for “Lichenoid drug reaction” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
L43.2Lichenoid drug reaction
ICD-10-CA · Canada · Also written L432
Index terms
Entries in CIHI’s alphabetical index that lead to L43.2. Searching the index by the condition the note names is how coders reach this code.
- Reaction, drug NEC, lichenoid
Notes for L43.2
As CIHI prints them, with any note L43.2 takes from the headings above it.
Use additional code
Add a code for this detail when the note documents it.
- Use additional external cause code (Chapter XX) to identify drug.
Excludes
Conditions classified elsewhere.
- Lichen planopilaris (L66.1)From L43 Lichen planus
- 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)
Where L43.2 sits
- 1ChapterChapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
- 2Block L40-L45Papulosquamous disorders
- 3Category L43Lichen planus
- 4Valid code L43.2Lichenoid drug reaction
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
What does ICD-10-CA code L43.2 mean?
L43.2 is the ICD-10-CA code for “Lichenoid drug reaction” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is L43.2 in ICD-10-CA?
L43.2 sits under L43 Lichen planus, within L40-L45 Papulosquamous disorders, within Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99).
What coding notes apply to L43.2?
ICD-10-CA lists Use additional code, Excludes notes for L43.2, 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.