DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

L00-L99 · FY2027

Chapter 12 Diseases of the skin and subcutaneous tissue (L00-L99)

Chapter 12 holds 74 categories in 9 blocks, with 1,001 billable codes in FY2027, 1 of them new this year.

Blocks
9
Categories
74
Billable codes
1,001
New FY2027
1
Instructions
10

Blocks and categories

Chapter instructions

Excludes2

  • certain conditions originating in the perinatal period (P04-P96) P04 P96
  • certain infectious and parasitic diseases (A00-B99) A00 B99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) O00 O9A
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) Q00 Q99
  • endocrine, nutritional and metabolic diseases (E00-E88) E00 E88
  • lipomelanotic reticulosis (I89.8) I89.8
  • neoplasms (C00-D49) C00 D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) R00 R94
  • systemic connective tissue disorders (M30-M36) M30 M36
  • viral warts (B07.-) B07