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H70.1

Chronic mastoiditis

Non-billableCategory

Code Hierarchy

H70H70.1

Chapter: 8. Diseases of the ear and mastoid process

Section: H65-H75 - Diseases of middle ear and mastoid

Coding Guidelines

Inclusion Terms

  • Caries of mastoid
  • Fistula of mastoid

Excludes1 (Mutually Exclusive)

These codes should never be used together with H70.1

  • A18.03 - tuberculous mastoiditis (A18.03)

Specific Codes (4)

H70.10Billable

Chronic mastoiditis, unspecified ear

H70.11Billable

Chronic mastoiditis, right ear

H70.12Billable

Chronic mastoiditis, left ear

H70.13Billable

Chronic mastoiditis, bilateral

Related Codes

H70.0Category

Acute mastoiditis

H70.2Category

Petrositis

H70.8Category

Other mastoiditis and related conditions

H70.9Category

Unspecified mastoiditis

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