J33.9 Nasal polyp, unspecified

Billable ICD-10-CM code, FY2026.

Applies from J33 Nasal polyp

Excludes1 (never code together)

• adenomatous polyps (D14.0)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 471.9 Unspecified nasal polyp

Code annotations containing back-references to J33.9

Back-references to J33

• Type 1 Excludes: D14.0 Benign neoplasm of middle ear, nasal cavity and accessory sinuses ("polyp of nasal (cavity) (J33.-)")

Diagnosis Index entries for J33.9

• Hyperplasia, hyperplastic › nose › polypoid
• Polyp, polypus › nares › anterior
• Polyp, polypus › nasal (mucous)
• Polyp, polypus › nose (mucous)

Nearby codes

• J33 Nasal polyp
• J33.0 Polyp of nasal cavity
• J33.1 Polypoid sinus degeneration
• J33.8 Other polyp of sinus
• J33.9 Nasal polyp, unspecified (this code)