DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 12

L20-L30 Dermatitis and eczema (L20-L30)

Block L20-L30 groups 11 categories with 74 billable codes in FY2027.

Where it sits

  1. Chapter 12 Diseases of the skin and subcutaneous tissue (L00-L99)
  2. L20-L30 Dermatitis and eczema (L20-L30)

Neighbouring blocks

Categories
11
Billable codes
74
CC codes
0
MCC codes
0
HCC V28 codes
0
New FY2027
0

Categories in L20-L30

  • L20

    Atopic dermatitis

    Besnier'sprurigo → L20.0

    • 7 billable codes
  • L21

    Seborrheic dermatitis

    Furfur → L21.0

    • 4 billable codes
  • L22

    Diaper dermatitis

    Diaper rash → L22

    • Billable, no subdivisions
  • L23

    Allergic contact dermatitis

    Poison ivy, oak, sumac or other plant dermatitis (allergic) (contact) → L23.7

    • 11 billable codes
  • L24

    Irritant contact dermatitis

    Itch, itchingbricklayer's → L24.5

    • 19 billable codes
  • L25

    Unspecified contact dermatitis

    Dermatitis (eczematous)contact (occupational) → L25.9

    • 8 billable codes
  • L26

    Exfoliative dermatitis

    Hebra'spityriasis → L26

    • Billable, no subdivisions
  • L27

    Dermatitis due to substances taken internally

    Hand-foot syndrome → L27.1

    • 5 billable codes
  • L28

    Lichen simplex chronicus and prurigo

    Lichen → L28.0

    • 3 billable codes
  • L29

    Pruritus

    Pruritus, pruritic (essential) → L29.9

    • 7 billable codes
  • L30

    Other and unspecified dermatitis

    Chafing → L30.4

    • 8 billable codes

Index main terms

  • Dermatitis (eczematous) → L20, L21, L22, L23, L24, L25, L26, L27, L28, L30 (175 entries)
  • Eczema (acute) (chronic) (erythematous) (fissum) (rubrum) (squamous) → L20, L21, L28, L30 (12 entries)
  • Pruritus, pruritic (essential) → L29 (10 entries)
  • Pityriasis (capitis) → L21, L26, L30 (8 entries)
  • Eruption → L22, L27, L28 (7 entries)
  • Seborrhea, seborrheic → L21 (7 entries)
  • Erythema, erythematous (infectional) (inflammation) → L22, L24, L30 (5 entries)
  • Itch, itching → L23, L24, L29 (4 entries)
  • Neurodermatitis (circumscribed) (circumscripta) (local) → L20, L28 (4 entries)
  • Rash (toxic) → L22, L25, L27 (4 entries)
  • Lichen → L28 (3 entries)
  • Prurigo (ferox) (gravis) (Hebrae) (Hebra's) (mitis) (simplex) → L20, L28 (3 entries)
  • Allergy, allergic (reaction) (to) → L23, L27 (2 entries)
  • Disease, diseased → L28 (2 entries)
  • Exudate → L24 (2 entries)

+39 more main terms; the search box finds them by word.

Block instructions

Notes

  • In this block the terms dermatitis and eczema are used synonymously and interchangeably.

Excludes2

  • chronic (childhood) granulomatous disease (D71-) D71
  • dermatitis gangrenosa (L08.0) L08.0
  • dermatitis herpetiformis (L13.0) L13.0
  • dry skin dermatitis (L85.3) L85.3
  • factitial dermatitis (L98.1) L98.1
  • perioral dermatitis (L71.0) L71.0
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59) L55 L59
  • stasis dermatitis (I87.2) I87.2

Notes that also apply

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