DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

L21 Seborrheic dermatitis

  • Header · not billable

L21 is not billable. The category heads 4 billable codes in FY2027: the 4 codes directly below it.

Index → code

Where it sits

  1. Chapter 12 Diseases of the skin and subcutaneous tissue (L00-L99)
  2. L20-L30 Dermatitis and eczema (L20-L30)
  3. L21 Seborrheic dermatitis
Billable codes
4
Subdivisions
4
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
22

Codes in L21

  1. L21.0
    Seborrhea capitis
    Billable
    Inclusion terms 1

    Inclusion terms

    • Cradle cap
  2. L21.1
    Seborrheic infantile dermatitis
    Billable
  3. L21.8
    Other seborrheic dermatitis
    Billable
  4. L21.9
    Seborrheic dermatitis, unspecified
    Billable
    Inclusion terms 1

    Inclusion terms

    • Seborrhea NOS

Sources of each column.

Instructions

At L21

Excludes2

  • infective dermatitis (L30.3) L30.3
  • seborrheic keratosis (L82.-) L82

Notes that also apply

Block L20-L30 instructions (Notes 1, Excludes2 8): printed on the block page.

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

Index entries

  • Cradle cap → L21.0
  • Crusta lactea → L21.0
  • Dandruff → L21.0
  • Furfur → L21.0
  • Pityriasis (capitis) → L21.0
  • Leiner's disease → L21.1
  • Seborrhea, seborrheic → L21.9
  • Milkcrust → L21.0
  • Pityriasis (capitis)furfuracea → L21.0
  • Seborrhea, seborrheiccapitis → L21.0
  • Seborrhea, seborrheicsicca → L21.0
  • Erythroderma (secondary)desquamativum → L21.1
  • Dermatitis (eczematous)seborrheic → L21.9
  • Seborrhea, seborrheicdermatitis → L21.9
  • Seborrhea, seborrheiceczema → L21.9
  • Dermatitis (eczematous)seborrheicinfantile → L21.1
  • Eczema (acute) (chronic) (erythematous) (fissum) (rubrum) (squamous)infantile (due to any substance)intertriginous → L21.1
  • Eczema (acute) (chronic) (erythematous) (fissum) (rubrum) (squamous)infantile (due to any substance)seborrheic → L21.1
  • Eczema (acute) (chronic) (erythematous) (fissum) (rubrum) (squamous)intertriginous NECinfantile → L21.1
  • Seborrhea, seborrheicdermatitisinfantile → L21.1
  • Seborrhea, seborrheiceczemainfantile → L21.1
  • Dermatitis (eczematous)seborrheicspecified NEC → L21.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy