J33.1 Polypoid sinus degeneration

Billable ICD-10-CM code, FY2026.

Applicable to

• Woakes' syndrome or ethmoiditis

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)

• 471.1 Polypoid sinus degeneration

Code annotations containing back-references to J33.1

Back-references to J33.1

• Type 1 Excludes: J32.2 Chronic ethmoidal sinusitis ("Woakes' ethmoiditis (J33.1)")

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 J33.1

• Degeneration, degenerative › sinus (cystic) › polypoid
• Ethmoiditis (chronic) (nonpurulent) (purulent) › Woakes'
• Syndrome › Woakes' (ethmoiditis)
• Woakes' ethmoiditis or syndrome

Nearby codes

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