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

Rules Conventions GCS

Dermatitis and eczema
(L20-L30)

Note:

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

Excl.:
chronic (childhood) granulomatous disease ( D71)
dermatitis:
radiation-related disorders of the skin and subcutaneous tissue ( L55-L59)

L20 Atopic dermatitis

Excl.:
circumscribed neurodermatitis ( L28.0)
L20.0 Besnier prurigo
L20.8 Other atopic dermatitis
Incl.:
Eczema:
  • flexural NEC
  • infantile (acute)(chronic)
  • intrinsic (allergic)
Neurodermatitis:
  • atopic
  • diffuse
L20.9 Atopic dermatitis, unspecified

L21 Seborrhoeic dermatitis

Excl.:
infective dermatitis ( L30.3)
L21.0 Seborrhoea capitis
Incl.:
Cradle cap
L21.1 Seborrhoeic infantile dermatitis
L21.8 Other seborrhoeic dermatitis
L21.9 Seborrhoeic dermatitis, unspecified

L22 Diaper [napkin] dermatitis

Incl.:
Diaper or napkin:
  • erythema
  • rash
Psoriasiform napkin rash

L23 Allergic contact dermatitis

Incl.:
allergic contact eczema
Excl.:
allergy NOS ( T78.4)
dermatitis (of):
eczema of external ear ( H60.5)
radiation-related disorders of the skin and subcutaneous tissue ( L55-L59)
L23.0 Allergic contact dermatitis due to metals
Incl.:
Chromium
Nickel
L23.1 Allergic contact dermatitis due to adhesives
L23.2 Allergic contact dermatitis due to cosmetics
L23.3 Allergic contact dermatitis due to drugs in contact with skin
Coding-Hint
Use additional external cause code (Chapter XX), if desired, to identify drug.
Excl.:
allergic reaction NOS due to drugs ( T88.7)
dermatitis due to ingested drugs and medicaments ( L27.0-L27.1)
L23.4 Allergic contact dermatitis due to dyes
L23.5 Allergic contact dermatitis due to other chemical products
Incl.:
Cement
Insecticide
Plastic
Rubber
L23.6 Allergic contact dermatitis due to food in contact with skin
Excl.:
dermatitis due to ingested food ( L27.2)
L23.7 Allergic contact dermatitis due to plants, except food
L23.8 Allergic contact dermatitis due to other agents
L23.9 Allergic contact dermatitis, unspecified cause
Incl.:
Allergic contact eczema NOS

L24 Irritant contact dermatitis

Incl.:
irritant contact eczema
Excl.:
allergy NOS ( T78.4)
dermatitis (of):
eczema of external ear ( H60.5)
radiation-related disorders of the skin and subcutaneous tissue ( L55-L59)
L24.0 Irritant contact dermatitis due to detergents
L24.1 Irritant contact dermatitis due to oils and greases
L24.2 Irritant contact dermatitis due to solvents
Incl.:
Solvents:
  • chlorocompound
  • cyclohexane
  • ester
  • glycol
  • hydrocarbon
  • ketone
L24.3 Irritant contact dermatitis due to cosmetics
L24.4 Irritant contact dermatitis due to drugs in contact with skin
Coding-Hint
Use additional external cause code (Chapter XX), if desired, to identify drug.
Excl.:
allergic reaction NOS due to drugs ( T88.7)
dermatitis due to ingested drugs and medicaments ( L27.0-L27.1)
L24.5 Irritant contact dermatitis due to other chemical products
Incl.:
Cement
Insecticide
L24.6 Irritant contact dermatitis due to food in contact with skin
Excl.:
dermatitis due to ingested food ( L27.2)
L24.7 Irritant contact dermatitis due to plants, except food
L24.8 Irritant contact dermatitis due to other agents
Incl.:
Dyes
L24.9 Irritant contact dermatitis, unspecified cause
Incl.:
Irritant contact eczema NOS

L25 Unspecified contact dermatitis

Incl.:
unspecified contact eczema
Excl.:
allergy NOS ( T78.4)
dermatitis (of):
eczema of external ear ( H60.5)
radiation-related disorders of the skin and subcutaneous tissue ( L55-L59)
L25.0 Unspecified contact dermatitis due to cosmetics
L25.1 Unspecified contact dermatitis due to drugs in contact with skin
Coding-Hint
Use additional external cause code (Chapter XX), if desired, to identify drug.
Excl.:
allergic reaction NOS due to drugs ( T88.7)
dermatitis due to ingested drugs and medicaments ( L27.0-L27.1)
L25.2 Unspecified contact dermatitis due to dyes
L25.3 Unspecified contact dermatitis due to other chemical products
Incl.:
Cement
Insecticide
L25.4 Unspecified contact dermatitis due to food in contact with skin
Excl.:
dermatitis due to ingested food ( L27.2)
L25.5 Unspecified contact dermatitis due to plants, except food
L25.8 Unspecified contact dermatitis due to other agents
L25.9 Unspecified contact dermatitis, unspecified cause
Incl.:
Contact:
  • dermatitis (occupational) NOS
  • eczema (occupational) NOS

L26 Exfoliative dermatitis

Incl.:
Hebra pityriasis
Excl.:
Ritter disease ( L00)

L27 Dermatitis due to substances taken internally

Excl.:
adverse:
allergy NOS ( T78.4)
contact dermatitis ( L23-L25)
drug:
  • photoallergic response (L56.1)
  • phototoxic response (L56.0)
urticaria ( L50.-)
L27.0 Generalized skin eruption due to drugs and medicaments
Coding-Hint
Use additional external cause code (Chapter XX), if desired, to identify drug.
L27.1 Localized skin eruption due to drugs and medicaments
Coding-Hint
Use additional external cause code (Chapter XX), if desired, to identify drug.
L27.2 Dermatitis due to ingested food
Excl.:
dermatitis due to food in contact with skin ( L23.6, L24.6, L25.4)
L27.8 Dermatitis due to other substances taken internally
L27.9 Dermatitis due to unspecified substance taken internally

L28 Lichen simplex chronicus and prurigo

L28.0 Lichen simplex chronicus
Incl.:
Circumscribed neurodermatitis
Lichen NOS
L28.1 Prurigo nodularis
L28.2 Other prurigo
Incl.:
Prurigo:
  • NOS
  • Hebra
  • mitis
Urticaria papulosa

L29 Pruritus

Excl.:
neurotic excoriation ( L98.1)
psychogenic pruritus ( F45.8)
L29.0 Pruritus ani
L29.1 Pruritus scroti
L29.2 Pruritus vulvae
L29.3 Anogenital pruritus, unspecified
L29.8 Other pruritus
L29.9 Pruritus, unspecified
Incl.:
Itch NOS

L30 Other dermatitis

Excl.:
dermatitis:
small plaque parapsoriasis ( L41.3)
stasis dermatitis ( I83.1-I83.2)
L30.0 Nummular dermatitis
L30.1 Dyshidrosis [pompholyx]
L30.2 Cutaneous autosensitization
Incl.:
Candidid [levurid]
Dermatophytid
Eczematid
L30.3 Infective dermatitis
Incl.:
Infectious eczematoid dermatitis
L30.4 Erythema intertrigo
L30.5 Pityriasis alba
L30.8 Other specified dermatitis
L30.9 Dermatitis, unspecified
Incl.:
Eczema NOS