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ICD-9-CM procedure code (retired)

33.91 — Bronchial dilation

ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-PCS equivalents from the CMS General Equivalence Mappings.

About ICD-9-CM 33.91

33.91 is an ICD-9-CM procedure code for bronchial dilation. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-PCS took over.

The CMS General Equivalence Mappings translate it to 80 ICD-10-PCS codes, such as 0B730DZ (Dilation of Right Main Bronchus with Intraluminal Device, Open Approach), 0B730ZZ (Dilation of Right Main Bronchus, Open Approach) and 0B733DZ (Dilation of Right Main Bronchus with Intraluminal Device, Percutaneous Approach). All of these are approximate matches, so review the record to pick the right one.

ICD-10-PCS equivalents

Common questions about 33.91

What is the ICD-10 code for ICD-9 33.91?

The GEMs map 33.91 to ICD-10-PCS 0B730DZ, 0B730ZZ, 0B733DZ, 0B733ZZ, 0B734DZ, 0B734ZZ and 74 more.

GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.