L73.9

Follicular disorder, unspecified

FY2027Chapter 12: Diseases of the skin and subcutaneous tissue/L60–L75 Disorders of skin appendages

BillableComplete code, valid to report

L73.9 (also written L739) is a billable ICD-10-CM diagnosis code for follicular disorder, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 5 codes in category L73 (Other follicular disorders). The Alphabetic Index lists it under 4 entries. Its coding notes include 1 Excludes1 entry and 10 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (1 note)
Inherited from L60–L75 Disorders of skin appendages
  • congenital malformations of integument (Q84.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue
  • 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.-)

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 4 entries