ICD-9-CM procedure code (retired)
18.02 — Incision of external auditory canal
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 18.02
18.02 is an ICD-9-CM procedure code for incision of external auditory canal. 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 30 ICD-10-PCS codes, such as 099300Z (Drainage of Right External Auditory Canal with Drainage Device, Open Approach), 09930ZZ (Drainage of Right External Auditory Canal, Open Approach) and 099330Z (Drainage of Right External Auditory Canal with Drainage Device, Percutaneous Approach). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 099300ZDrainage of Right External Auditory Canal with Drainage Device, Open Approachapproximate
- 09930ZZDrainage of Right External Auditory Canal, Open Approachapproximate
- 099330ZDrainage of Right External Auditory Canal with Drainage Device, Percutaneous Approachapproximate
- 09933ZZDrainage of Right External Auditory Canal, Percutaneous Approachapproximate
- 099340ZDrainage of Right External Auditory Canal with Drainage Device, Percutaneous Endoscopic Approachapproximate
- 09934ZZDrainage of Right External Auditory Canal, Percutaneous Endoscopic Approachapproximate
- 099370ZDrainage of Right External Auditory Canal with Drainage Device, Via Natural or Artificial Openingapproximate
- 09937ZZDrainage of Right External Auditory Canal, Via Natural or Artificial Openingapproximate
- 099380ZDrainage of Right External Auditory Canal with Drainage Device, Via Natural or Artificial Opening Endoscopicapproximate
- 09938ZZDrainage of Right External Auditory Canal, Via Natural or Artificial Opening Endoscopicapproximate
- 0993X0ZDrainage of Right External Auditory Canal with Drainage Device, External Approachapproximate
- 0993XZZDrainage of Right External Auditory Canal, External Approachapproximate
- 099400ZDrainage of Left External Auditory Canal with Drainage Device, Open Approachapproximate
- 09940ZZDrainage of Left External Auditory Canal, Open Approachapproximate
- 099430ZDrainage of Left External Auditory Canal with Drainage Device, Percutaneous Approachapproximate
- 09943ZZDrainage of Left External Auditory Canal, Percutaneous Approachapproximate
- 099440ZDrainage of Left External Auditory Canal with Drainage Device, Percutaneous Endoscopic Approachapproximate
- 09944ZZDrainage of Left External Auditory Canal, Percutaneous Endoscopic Approachapproximate
- 099470ZDrainage of Left External Auditory Canal with Drainage Device, Via Natural or Artificial Openingapproximate
- 09947ZZDrainage of Left External Auditory Canal, Via Natural or Artificial Openingapproximate
- 099480ZDrainage of Left External Auditory Canal with Drainage Device, Via Natural or Artificial Opening Endoscopicapproximate
- 09948ZZDrainage of Left External Auditory Canal, Via Natural or Artificial Opening Endoscopicapproximate
- 0994X0ZDrainage of Left External Auditory Canal with Drainage Device, External Approachapproximate
- 0994XZZDrainage of Left External Auditory Canal, External Approachapproximate
- 09C30ZZExtirpation of Matter from Right External Auditory Canal, Open Approachapproximate
- 09C33ZZExtirpation of Matter from Right External Auditory Canal, Percutaneous Approachapproximate
- 09C34ZZExtirpation of Matter from Right External Auditory Canal, Percutaneous Endoscopic Approachapproximate
- 09C40ZZExtirpation of Matter from Left External Auditory Canal, Open Approachapproximate
- 09C43ZZExtirpation of Matter from Left External Auditory Canal, Percutaneous Approachapproximate
- 09C44ZZExtirpation of Matter from Left External Auditory Canal, Percutaneous Endoscopic Approachapproximate
Common questions about 18.02
What is the ICD-10 code for ICD-9 18.02?
- The GEMs map 18.02 to ICD-10-PCS 099300Z, 09930ZZ, 099330Z, 09933ZZ, 099340Z, 09934ZZ and 24 more.
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.