DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 12

L49-L54 Urticaria and erythema (L49-L54)

Block L49-L54 groups 6 categories with 33 billable codes in FY2027.

Where it sits

  1. Chapter 12 Diseases of the skin and subcutaneous tissue (L00-L99)
  2. L49-L54 Urticaria and erythema (L49-L54)

Neighbouring blocks

Categories
6
Billable codes
33
CC codes
14
MCC codes
0
HCC V28 codes
0
New FY2027
0

Categories in L49-L54

  • L49

    Exfoliation due to erythematous conditions according to extent of body surface involved

    Exfoliationdue to erythematous conditions according to extent of body surface involved → L49.0

    • 10 billable codes
    • 7 CC
  • L50

    Urticaria

    Urticaria → L50.9

    • 9 billable codes
  • L51

    Erythema multiforme

    Lyell's syndrome → L51.2

    • 6 billable codes
    • 3 CC
  • L52

    Erythema nodosum

    Dermatitis (eczematous)contusiformis → L52

    • Billable, no subdivisions
  • L53

    Other erythematous conditions

    Erythroderma (secondary) → L53.9

    • 6 billable codes
    • 4 CC
  • L54

    Erythema in diseases classified elsewhere

    Erythema, erythematous (infectional) (inflammation)in diseases classified elsewhere → L54

    • Billable, no subdivisions

Index main terms

  • Erythema, erythematous (infectional) (inflammation) → L51, L52, L53, L54 (19 entries)
  • Urticaria → L50 (19 entries)
  • Exfoliation → L49 (11 entries)
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) → L51, L52 (3 entries)
  • Arthropathy → L51, L52 (2 entries)
  • Lyell's syndrome → L51 (2 entries)
  • Stevens-Johnson disease or syndrome → L51 (2 entries)
  • Syndrome → L51 (2 entries)
  • Allergy, allergic (reaction) (to) → L50 (1 entry)
  • Autographism → L50 (1 entry)
  • Darier (-White) disease (congenital) → L53 (1 entry)
  • Dermatitis (eczematous) → L52 (1 entry)
  • Dermatographia → L50 (1 entry)
  • Dermographia, dermographism → L50 (1 entry)
  • Ectodermosis erosiva pluriorificialis → L51 (1 entry)

+5 more main terms; the search box finds them by word.

Block instructions

Excludes1

  • Lyme disease (A69.2-) A69.2
  • rosacea (L71.-) L71

Notes that also apply

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