ICD-9-CM Codes ICD-9-PCS Codes

2042 - Radical mastoidectomy

GEM Conversion to ICD-10 PCS

09T.B0ZZ

Fs: 10000 – Resection of Right Mastoid Sinus, Open Approach

09T.B4ZZ

Fs: 10000 – Resection of Right Mastoid Sinus, Percutaneous Endoscopic Approach

09T.C0ZZ

Fs: 10000 – Resection of Left Mastoid Sinus, Open Approach

09T.C4ZZ

Fs: 10000 – Resection of Left Mastoid Sinus, Percutaneous Endoscopic Approach

Sibling Codes

204.1

Simple mastoidectomy

204.2

Radical mastoidectomy

204.9

Other mastoidectomy

Parent Sibling Codes

201

Removal of tympanostomy tube

208

Operations on eustachian tube