H62.42 Otitis externa in other diseases classified elsewhere, left ear

Billable ICD-10-CM code, FY2026.

Applies from H62.4 Otitis externa in other diseases classified elsewhere

Excludes1 (never code together)

• otitis externa (in):
• candidiasis (B37.84)
• herpes viral [herpes simplex] (B00.1)
• herpes zoster (B02.8)

Code first

• underlying disease, such as:
• erysipelas (A46)
• impetigo (L01.0-)

MS-DRG index

Defines the logic of DRG(s) 154-156 in MDC 03.

Approximate ICD-9-CM (GEMs)

• 380.13 Other acute infections of external ear (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Nearby codes

• H62 Disorders of external ear in diseases classified elsewhere
• H62.4 Otitis externa in other diseases classified elsewhere
• H62.40 Otitis externa in other diseases classified elsewhere, unspecified ear
• H62.41 Otitis externa in other diseases classified elsewhere, right ear
• H62.42 Otitis externa in other diseases classified elsewhere, left ear (this code)
• H62.43 Otitis externa in other diseases classified elsewhere, bilateral
• H62.8 Other disorders of external ear in diseases classified elsewhere
• H62.8X Other disorders of external ear in diseases classified elsewhere
• H62.8X1 Other disorders of right external ear in diseases classified elsewhere
• H62.8X2 Other disorders of left external ear in diseases classified elsewhere