2027 ICD-10-CM Diagnosis Code L43.8Other lichen planus
ICD-10-CM Codes›L00–L99›L40-L45›L43
- Billable — Valid for Submission
- Not Chronic
L43.8 is a billable ICD-10-CM diagnosis code for other lichen planus. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Actinic lichen planus
- Acute eruptive lichen planus
- Acute papular eruption of skin
- Annular atrophic lichen planus
- Annular lichen planus
- Annular oral lichen planus
- Atrophic lichen planus
- Atrophic oral lichen planus
- Chronic lichen planus
- Confluent lichen planus
- Erosion of skin
- Erosive lichen planus
- Erosive lichen planus of lips
- Erosive lichen planus of vagina
- Erosive lichen planus of vulva
- Erosive oral lichen planus
- Eruption of female perineum
- Eruption of vulva
- Flexural lichen planus
- Genital lichen planus
- Hyperkeratosis of vulva
- Inflammation of vaginal wall
- Köbner reaction from lichen planus
- Lichen planus obtusus
- Lichen planus of lips
- Lichen planus of palms and soles
- Lichen planus of vulva
- Lichen planus pemphigoides
- Lichen planus pigmentosus
- Lichenification of female perineum
- Lichenification of vulva
- Lichenoid allergic contact reaction
- Lichenoid allergic contact reaction caused by color developer
- Lichenoid allergic contact reaction caused by tattoo ink
- Micropapular lichen planus
- Mutilating lichen planus of fingers and toes
- Nonerosive lichen planus of oral mucosa
- Oral Wickham's striae in lichen planus
- Reticular oral lichen planus
- Ulcerative lichen planus
- Ulcerative lichen planus of palms and soles
- Wickham's striae in lichen planus
- Zosteriform lichen planus
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L43.8: its own notes plus those printed at L43 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may 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.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
annularis L43.8
specified NEC L43.8
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Lichen Planus
an inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. it is characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces. the lesions may be discrete or coalesce to form plaques. histologically, there is a saw-tooth pattern of epidermal hyperplasia and vacuolar alteration of the basal layer of the epidermis along with an intense upper dermal inflammatory infiltrate composed predominantly of t-cells. etiology is unknown.
Patient EducationClinical
Skin Conditions
Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:
The full article covers:
- What does your skin do?
- What problems and conditions can affect your skin?
- How can I keep my skin healthy?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L43.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L43.8Overview
What is the ICD-10 code for other lichen planus?
The ICD-10-CM code for other lichen planus is L43.8 (sometimes written as L438). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L43.8 (Lichen planus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other lichen planus on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L43.8 group to?
When other lichen planus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.
Can L43.8 be reported with a code from L66.1?
Not as a rule. The Excludes1 note at L43, which applies to L43.8, lists "lichen planopilaris (L66.1-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of L43.8?
Under the General Equivalence Mappings, other lichen planus converts to ICD-9-CM 697.0 (lichen planus). The mapping is approximate, so confirm the match fits the documentation.
