L66.19 — Other lichen planopilaris
Is L66.19 billable?
Yes — L66.19 is billable for FY2027. L66.19 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. L66.19 may be submitted for encounters from October 1, 2026 through September 30, 2027.
L66.19 at a glance
| Code | L66.19 |
|---|---|
| Description | Other lichen planopilaris |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does L66.19 group to?
L66.19 sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 606Minor Skin Disorders with MCCmedical
- 607Minor Skin Disorders without MCCmedical
How is L66.19 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to L66.19. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Syndrome › Lassueur Graham-Little Piccardi
- Lichen › planopilaris › specified NEC
Inclusion terms
Alternative wording in documentation that is classified to L66.19.
- Lassueur Graham-Little Piccardi syndrome
Excludes1 — never code together — inherited from L60-L75
The conditions below can never be reported together with L66.19 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- congenital malformations of integument (Q84.-)
Excludes2 — not included here — inherited from Chapter 12
The conditions below are not part of L66.19, but a patient may have both at the same time. When documentation supports it, L66.19 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.-)
How long has L66.19 existed?
L66.19 first appears in FY2025.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.