ICD-9-CM procedure code (retired)
12.21 — Diagnostic aspiration of anterior chamber of eye
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 12.21
12.21 is an ICD-9-CM procedure code for diagnostic aspiration of anterior chamber of eye. 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 2 ICD-10-PCS codes, such as 08923ZX (Drainage of Right Anterior Chamber, Percutaneous Approach, Diagnostic) and 08933ZX (Drainage of Left Anterior Chamber, Percutaneous Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
Common questions about 12.21
What is the ICD-10 code for ICD-9 12.21?
- The GEMs map 12.21 to ICD-10-PCS 08923ZX and 08933ZX.
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.