DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 12

L00-L08 Infections of the skin and subcutaneous tissue (L00-L08)

Block L00-L08 groups 7 categories with 159 billable codes in FY2027. One code is new this year.

Where it sits

  1. Chapter 12 Diseases of the skin and subcutaneous tissue (L00-L99)
  2. L00-L08 Infections of the skin and subcutaneous tissue (L00-L08)

Neighbouring blocks

Categories
7
Billable codes
159
CC codes
73
MCC codes
0
HCC V28 codes
0
New FY2027
1

Categories in L00-L08

  • L00

    Staphylococcal scalded skin syndrome

    Ritter's disease → L00

    • Billable, no subdivisions
  • L01

    Impetigo

    Perifolliculitis → L01.02

    • 6 billable codes
  • L02

    Cutaneous abscess, furuncle and carbuncle

    Furuncle → L02.92

    • 81 billable codes
    • 27 CC
    • 1 new
  • L03

    Cellulitis and acute lymphangitis

    Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) → L03.90

    • 55 billable codes
    • 43 CC
  • L04

    Acute lymphadenitis

    Adenitisgangrenous → L04.9

    • 6 billable codes
  • L05

    Pilonidal cyst and sinus

    Sinuspilonidal (infected) (rectum) → L05.92

    • 4 billable codes
    • 2 CC
  • L08

    Other local infections of skin and subcutaneous tissue

    Ecthyma → L08.0

    • 6 billable codes
    • 1 CC

FY2027 changes in L00-L08

  • L02.237 Carbuncle of flank New FY2027
  • L02.232 Carbuncle of back [any part, except buttock and flank] Title revised FY2027
  • L03.312 Cellulitis of back [any part except buttock and flank] Title revised FY2027
  • L03.322 Acute lymphangitis of back [any part except buttock and flank] Title revised FY2027

Index main terms

  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) → L02, L04, L05 (52 entries)
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) → L03 (38 entries)
  • Furuncle → L02 (35 entries)
  • Carbuncle → L02 (34 entries)
  • Lymphangitis → L03 (34 entries)
  • Infection, infected, infective (opportunistic) → L03, L04, L08 (23 entries)
  • Lymphadenitis → L04 (11 entries)
  • Impetigo (any organism) (any site) (circinate) (contagiosa) (simplex) (vulgaris) → L01 (9 entries)
  • Dermatitis (eczematous) → L00, L08 (8 entries)
  • Inflammation, inflamed, inflammatory (with exudation) → L08 (8 entries)
  • Adenitis → L04 (6 entries)
  • Sinus → L05, L08 (3 entries)
  • Cyst (colloid) (mucous) (simple) (retention) → L05 (2 entries)
  • Disease, diseased → L00, L08 (2 entries)
  • Ecthyma → L08 (2 entries)

+24 more main terms; the search box finds them by word.

Block instructions

Excludes2

  • hordeolum (H00.0) H00.0
  • infective dermatitis (L30.3) L30.3
  • local infections of skin classified in Chapter 1
  • lupus panniculitis (L93.2) L93.2
  • panniculitis NOS (M79.3) M79.3
  • panniculitis of neck and back (M54.0-) M54.0
  • Perlèche NOS (K13.0) K13.0
  • Perlèche due to candidiasis (B37.0) B37.0
  • Perlèche due to riboflavin deficiency (E53.0) E53.0
  • pyogenic granuloma (L98.0) L98.0
  • relapsing panniculitis [Weber-Christian] (M35.6) M35.6
  • viral warts (B07.-) B07
  • zoster (B02.-) B02

Use additional code

  • code (B95-B97) to identify infectious agent. B95 B97

Notes that also apply

Chapter 12 instructions (Excludes2 10): printed on the chapter 12 page.