H70.01 Subperiosteal abscess of mastoid

Non-billable header with 4 child codes.

Applies from H70.0 Acute mastoiditis

Applicable to

• Abscess of mastoid
• Empyema of mastoid

Codes under H70.01

• H70.011 Subperiosteal abscess of mastoid, right ear
• H70.012 Subperiosteal abscess of mastoid, left ear
• H70.013 Subperiosteal abscess of mastoid, bilateral
• H70.019 Subperiosteal abscess of mastoid, unspecified ear

Code annotations containing back-references to H70.01

Back-references to H70

• Type 2 Excludes: H74 Other disorders of middle ear mastoid ("mastoiditis (H70.-)")

Diagnosis Index entries for H70.01

• Mastoiditis (coalescent) (hemorrhagic) (suppurative) › acute, subacute › subperiosteal

Nearby codes

• H70.00 Acute mastoiditis without complications
• H70.001 Acute mastoiditis without complications, right ear
• H70.002 Acute mastoiditis without complications, left ear
• H70.003 Acute mastoiditis without complications, bilateral
• H70.009 Acute mastoiditis without complications, unspecified ear
• H70.01 Subperiosteal abscess of mastoid (this code)
• H70.011 Subperiosteal abscess of mastoid, right ear
• H70.012 Subperiosteal abscess of mastoid, left ear
• H70.013 Subperiosteal abscess of mastoid, bilateral
• H70.019 Subperiosteal abscess of mastoid, unspecified ear
• H70.09 Acute mastoiditis with other complications