L21.9 Seborrheic dermatitis, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Seborrhea NOS

Applies from L21 Seborrheic dermatitis

Excludes2 (not included here)

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

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 690.10 Seborrheic dermatitis, unspecified (approximate)
• 706.3 Seborrhea (approximate)

Code annotations containing back-references to L21.9

Back-references to L21

• Type 2 Excludes: L82 Seborrheic keratosis ("seborrheic dermatitis (L21.-)")

Diagnosis Index entries for L21.9

• Dermatitis (eczematous) › seborrheic
• Seborrhea, seborrheic
• Seborrhea, seborrheic › dermatitis
• Seborrhea, seborrheic › eczema

Nearby codes

• L21 Seborrheic dermatitis
• L21.0 Seborrhea capitis
• L21.1 Seborrheic infantile dermatitis
• L21.8 Other seborrheic dermatitis
• L21.9 Seborrheic dermatitis, unspecified (this code)