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ICD-9-CM procedure code (retired)

28.3 — Tonsillectomy with adenoidectomy

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 28.3

28.3 is an ICD-9-CM procedure code for tonsillectomy with adenoidectomy. 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 4 ICD-10-PCS codes, such as 0CTP0ZZ (Resection of Tonsils, Open Approach), 0CTPXZZ (Resection of Tonsils, External Approach) and 0CTQ0ZZ (Resection of Adenoids, Open Approach). All of these are approximate matches, so review the record to pick the right one. Some mappings are combinations: more than one ICD-10 code is needed to fully express the ICD-9 code.

ICD-10-PCS equivalents

Common questions about 28.3

What is the ICD-10 code for ICD-9 28.3?

The GEMs map 28.3 to ICD-10-PCS 0CTP0ZZ, 0CTPXZZ, 0CTQ0ZZ and 0CTQXZZ.

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.