ICD-10-CM 2027 diagnosis code

J33Nasal polyp

Not billable — use a more specific code

J33 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About J33

J33 is the ICD-10-CM diagnosis code for nasal polyp. It belongs to block J30-J39 (other diseases of upper respiratory tract) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: J33.0 (cavity), J33.1 (degeneration), J33.8 (sinus) and J33.9 (unspecified).

Don't report J33 together with the conditions in its Excludes1 note: adenomatous polyps (D14.0).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under J33

Coding notes

Excludes1Not coded here — never report together with this code

adenomatous polyps (D14.0)

Notes that apply from higher levels

Instructions written at a parent level also apply to J33.

Broader instructions also apply from Chapter 10: Diseases of the respiratory system.

Codes whose notes reference J33

D14.0Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about J33

Is J33 billable?: No. J33 is a header code. Report one of its more specific subcodes instead.