L43.1 – Bullous lichen planus
ICD-10-CM 2027 diagnosis code · Papulosquamous disorders
ICD-10-CM code
L43.1
- Code
L43.1(claims format:L431)- Description
- Bullous lichen planus
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 12. Diseases of the skin and subcutaneous tissue (L00-L99)
- Block
- L40-L45 Papulosquamous disorders
- Parent codes
- L43
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
L43 – Lichen planus
Excludes1 (not coded here):
- lichen planopilaris (L66.1-)
Index terms for L43.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in L43
Frequently asked questions
What is ICD-10 code L43.1?
L43.1 is the ICD-10-CM code for bullous lichen planus, in the block L40-L45 (Papulosquamous disorders).
Is L43.1 a billable code?
Yes. L43.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does L43.1 belong to?
It belongs to category L43 – Lichen planus.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.