L43.9
BillableLichen planus, unspecified
Lichen planus, unspecified
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- lichen planopilaris (L66.1-)
Excludes 2
Conditions not included here, but the patient may have both
- 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.-)
Also Known As / Clinical Terms
SNOMED CT
- LP - Lichen planus4776004
- Lichen planus4776004
- Ruber planus4776004
- Lichen planus linearis44509000
- Linear lichen planus44509000
- Detachment of nail plate75789001
- Onycholysis75789001
- Separation of nail plate75789001
- Postinflammatory skin pigmentation change95348005
- Pterygium of nail110987009
- OLP - Oral lichen planus235049008
- Oral lichen planus235049008
- Lichen planus of vulva237112004
- Guttate lichen planus238647005
- Papular lichen planus238647005
- Post-inflammatory hyperpigmentation in lichen planus238649008
- Lichen planus erythematosus238652000
- Lichen planus with lupus erythematosus238652000
- Lichen planus-lupus erythematosus overlap238652000
- Site-specific lichen planus238654004
- Lichen planopilaris of scalp238655003
- Lichen planus of scalp238655003
- Lichen planus of palms and soles238656002
- Lichen planus of nail238658001
- Nail pterygium in lichen planus238659009
- Lichen planus of tongue238665009
- Lichen planus of lips238666005
- Genital lichen planus238668006
- Lichen planus of penis238670002
- Lichen planus of glans penis238671003
- Post-inflammatory hypermelanosis238699007
- Post-inflammatory hyperpigmentation238699007
- Postinflammatory hyperpigmentation238699007
- Atrophia unguium276458009
- Atrophy of nail276458009
- Onychatrophia276458009
- Onychoatrophy276458009
- Overlap syndrome276657008
- Eruption of vulva289482006
- Rash of vulva289482006
- Vulval rash289482006
- Eruption of female perineum289857000
- Female perineal rash289857000
- Rash of female perineum289857000
- Onychoatrophy due to lichen planus402351009
- Poikiloderma due to lichen planus402352002
- Lupus erythematosus overlap syndrome402711009
- Conjunctivitis due to lichen planus416706004
- Conjunctivitis associated with autoimmune skin disorder417492002
- Papular oral lichen planus707248001
- Vulvovaginal gingival syndrome707250009
- Lichen planus of gingiva718068005
- Lichen planus co-occurrent with onycholysis726476005
- Eruption of scalp827044000
- Rash of scalp827044000
- Eruption of skin of penis1264043002
- Penile skin rash1264043002
- Rash of skin of penis1264043002
Frequently Asked Questions
What is ICD-10 code L43.9?
ICD-10-CM code L43.9 represents "Lichen planus, unspecified". It is a billable/specific code that can be used on a claim.
Is L43.9 a billable code?
Yes, L43.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is L43.9 in?
L43.9 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L43.9?
L43.9 has Excludes1 notes indicating codes that cannot be used together with it, including: lichen planopilaris (L66.1-).
What SNOMED CT codes does L43.9 map to?
L43.9 maps to 36 SNOMED CT concepts: 276458009, 417492002, 416706004, 75789001, 289857000, and 31 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for L43.9?
L43.9 is linked to 1 UMLS Concept Unique Identifier: C0023646. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.