H70 - Mastoiditis and related conditions
H70.8 - Other mastoiditis and related conditions
Excludes 1:
-preauricular sinus and cyst Q18.1)
-sinus, fistula, and cyst of branchial cleft Q18.0)
H70.81 - Postauricular fistula
H70.811 - Postauricular fistula, right ear
H70.812 - Postauricular fistula, left ear
H70.813 - Postauricular fistula, bilateral
H70.819 - Postauricular fistula, unspecified ear
H70.89 - Other mastoiditis and related conditions
H70.891 - Other mastoiditis and related conditions, right ear
H70.892 - Other mastoiditis and related conditions, left ear
H70.893 - Other mastoiditis and related conditions, bilateral
H70.899 - Other mastoiditis and related conditions, unspecified ear