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099C00Z - Drainage of Left Mastoid Sinus with Drainage Device, Open Approach


The ICD 10 Code for Drainage of Left Mastoid Sinus with Drainage Device, Open Approach is listed as 099C00Z.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD-10-PCS Field Value
Procedure Code: 099C00Z
Description: Drainage of Left Mastoid Sinus with Drainage Device, Open Approach
Chapter: Medical and Surgical
Subsection 1: Ear, Nose, Sinus
Subsection 2: Ear, Nose, Sinus, Drainage
ICD-9-CM V. 3 (Procedures) General Equivalence Mappings (GEMS):
ICD-9 PCS Code: 20.21 - Incision of mastoid (approximate)
ICD-9 PCS Code: 20.22 - Incision of petrous pyramid air cells (approximate)