ICD-9-CM procedure code (retired)
21.99 — Other operations on nose
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 21.99
21.99 is an ICD-9-CM procedure code for other operations on nose. 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 09QK0ZZ (Repair Nasal Mucosa and Soft Tissue, Open Approach), 09QK3ZZ (Repair Nasal Mucosa and Soft Tissue, Percutaneous Approach) and 09QK4ZZ (Repair Nasal Mucosa and Soft Tissue, Percutaneous Endoscopic Approach). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 09QK0ZZRepair Nasal Mucosa and Soft Tissue, Open Approachapproximate
- 09QK3ZZRepair Nasal Mucosa and Soft Tissue, Percutaneous Approachapproximate
- 09QK4ZZRepair Nasal Mucosa and Soft Tissue, Percutaneous Endoscopic Approachapproximate
- 09QKXZZRepair Nasal Mucosa and Soft Tissue, External Approachapproximate
Common questions about 21.99
What is the ICD-10 code for ICD-9 21.99?
- The GEMs map 21.99 to ICD-10-PCS 09QK0ZZ, 09QK3ZZ, 09QK4ZZ and 09QKXZZ.
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.