2019 ICD-10-CM Diagnosis Code L66

Cicatricial alopecia [scarring hair loss]

The following code(s) above L66 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to L66:
  • L00-L99
    2019 ICD-10-CM Range L00-L99

    Diseases of the skin and subcutaneous tissue

    Type 2 Excludes
    • 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.-)
    Diseases of the skin and subcutaneous tissue
  • L60-L75
    2019 ICD-10-CM Range L60-L75

    Disorders of skin appendages

    Type 1 Excludes
    • congenital malformations of integument (Q84.-)
    Disorders of skin appendages
Code History
ICD-10-CM Codes Adjacent To L66
L64 Androgenic alopecia
L64.0 Drug-induced androgenic alopecia
L64.8 Other androgenic alopecia
L64.9 Androgenic alopecia, unspecified
L65 Other nonscarring hair loss
L65.0 Telogen effluvium
L65.1 Anagen effluvium
L65.2 Alopecia mucinosa
L65.8 Other specified nonscarring hair loss
L65.9 Nonscarring hair loss, unspecified
L66 Cicatricial alopecia [scarring hair loss]
L66.0 Pseudopelade
L66.1 Lichen planopilaris
L66.2 Folliculitis decalvans
L66.3 Perifolliculitis capitis abscedens
L66.4 Folliculitis ulerythematosa reticulata
L66.8 Other cicatricial alopecia
L66.9 Cicatricial alopecia, unspecified
L67 Hair color and hair shaft abnormalities
L67.0 Trichorrhexis nodosa
L67.1 Variations in hair color

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.