 2008 ICD-9-CM Procedure 20.21
- Incision of mastoid
- 20.21 is a specific code that can be used to specify a procedure
- 20.21 contains 3 index entries
- View the full ICD-9-CM Volume 3 20.* hierarchy
Index entries containing 20.21:- Exploration -- see also Incision
- mastoid
 20.21
Incision (and drainage)- mastoid 20.21
Mastoidotomy 20.21
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