ICD-9-CM procedure code (retired)
49.91 — Incision of anal septum
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 49.91
49.91 is an ICD-9-CM procedure code for incision of anal septum. 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 6 ICD-10-PCS codes, such as 0DNQ0ZZ (Release Anus, Open Approach), 0DNQ3ZZ (Release Anus, Percutaneous Approach) and 0DNQ4ZZ (Release Anus, Percutaneous Endoscopic Approach). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 0DNQ0ZZRelease Anus, Open Approachapproximate
- 0DNQ3ZZRelease Anus, Percutaneous Approachapproximate
- 0DNQ4ZZRelease Anus, Percutaneous Endoscopic Approachapproximate
- 0DNQ7ZZRelease Anus, Via Natural or Artificial Openingapproximate
- 0DNQ8ZZRelease Anus, Via Natural or Artificial Opening Endoscopicapproximate
- 0DNQXZZRelease Anus, External Approachapproximate
Common questions about 49.91
What is the ICD-10 code for ICD-9 49.91?
- The GEMs map 49.91 to ICD-10-PCS 0DNQ0ZZ, 0DNQ3ZZ, 0DNQ4ZZ, 0DNQ7ZZ, 0DNQ8ZZ and 0DNQXZZ.
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.