383 Mastoiditis and related conditions convert 383 to ICD-10
383.0 Acute mastoiditis convert 383.0 to ICD-10

383.00 … without complications convert 383.00 to ICD-10

383.01 Subperiosteal abscess of mastoid convert 383.01 to ICD-10

383.02 … with other complications convert 383.02 to ICD-10
383.1 Chronic mastoiditis convert 383.1 to ICD-10
383.2 Petrositis convert 383.2 to ICD-10

383.20 … unspecified convert 383.20 to ICD-10

383.21 Acute petrositis convert 383.21 to ICD-10

383.22 Chronic petrositis convert 383.22 to ICD-10
383.3 Complications following mastoidectomy convert 383.3 to ICD-10

383.30 Postmastoidectomy complication unspecified convert 383.30 to ICD-10

383.31 Mucosal cyst of postmastoidectomy cavity convert 383.31 to ICD-10

383.32 Recurrent cholesteatoma of postmastoidectomy cavity convert 383.32 to ICD-10

383.33 Granulations of postmastoidectomy cavity convert 383.33 to ICD-10
383.8 Other disorders of mastoid convert 383.8 to ICD-10

383.81 Postauricular fistula convert 383.81 to ICD-10

383.89 Other disorders of mastoid convert 383.89 to ICD-10
383.9 Unspecified mastoiditis convert 383.9 to ICD-10