ICD-9-CM procedure code (retired)
10.21 — Biopsy of conjunctiva
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 10.21
10.21 is an ICD-9-CM procedure code for biopsy of conjunctiva. 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 089SXZX (Drainage of Right Conjunctiva, External Approach, Diagnostic), 089TXZX (Drainage of Left Conjunctiva, External Approach, Diagnostic) and 08BSXZX (Excision of Right Conjunctiva, External Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 089SXZXDrainage of Right Conjunctiva, External Approach, Diagnosticapproximate
- 089TXZXDrainage of Left Conjunctiva, External Approach, Diagnosticapproximate
- 08BSXZXExcision of Right Conjunctiva, External Approach, Diagnosticapproximate
- 08BTXZXExcision of Left Conjunctiva, External Approach, Diagnosticapproximate
Common questions about 10.21
What is the ICD-10 code for ICD-9 10.21?
- The GEMs map 10.21 to ICD-10-PCS 089SXZX, 089TXZX, 08BSXZX and 08BTXZX.
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.