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ICD-9-CM procedure code (retired)

27.24 — Biopsy of mouth, unspecified structure

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 27.24

27.24 is an ICD-9-CM procedure code for biopsy of mouth, unspecified structure. 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 3 ICD-10-PCS codes, such as 0W930ZX (Drainage of Oral Cavity and Throat, Open Approach, Diagnostic), 0W933ZX (Drainage of Oral Cavity and Throat, Percutaneous Approach, Diagnostic) and 0W934ZX (Drainage of Oral Cavity and Throat, Percutaneous Endoscopic Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.

ICD-10-PCS equivalents

Common questions about 27.24

What is the ICD-10 code for ICD-9 27.24?

The GEMs map 27.24 to ICD-10-PCS 0W930ZX, 0W933ZX and 0W934ZX.

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.