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20.41 - Simple Mastoidectomy


The ICD 9 Code for Simple mastoidectomy is listed as 20.41.
Additional information concerning this code and description can be found below including ICD 10 crosswalks / GEMS and chapter information where available.

ICD 9 CM Volume 3 (PCS) Field Value
Procedure Code: 20.41
Description: Simple mastoidectomy
Short Description: Simple mastoidectomy
Chapter: Operations on the ear
Subsection 1: Other operations on middle and inner ear
ICD-10-PCS General Equivalence Mappings (GEMS):
ICD 10 PCS Code: 09BB0ZZ - Excision of Right Mastoid Sinus, Open Approach (approximate)
ICD 10 PCS Code: 09BB3ZZ - Excision of Right Mastoid Sinus, Percutaneous Approach (approximate)
ICD 10 PCS Code: 09BB4ZZ - Excision of Right Mastoid Sinus, Percutaneous Endoscopic Approach (approximate)
ICD 10 PCS Code: 09BC0ZZ - Excision of Left Mastoid Sinus, Open Approach (approximate)
ICD 10 PCS Code: 09BC3ZZ - Excision of Left Mastoid Sinus, Percutaneous Approach (approximate)
ICD 10 PCS Code: 09BC4ZZ - Excision of Left Mastoid Sinus, Percutaneous Endoscopic Approach (approximate)
ICD-9-CM Volume 3 (PCS) Siblings (same level / similar specificity) of 20.41:
20.42 - Radical mastoidectomy
20.49 - Other mastoidectomy