N93.9 - Abnormal uterine and vaginal bleeding, unspecified

Clinical Definition

Acute mastoiditis is an infection and inflammation of the mastoid air cells within the temporal bone, typically occurring as a complication of acute otitis media. The condition can lead to serious complications if left untreated.

Documentation Requirements

• Acuity

  • Must specify "acute" vs. "chronic"

  • Document duration of symptoms

• Laterality

  • Left, right, or bilateral mastoid involvement

• Underlying Cause

  • Document if secondary to otitis media

  • Note any specific causative organisms if known

• Associated Complications

  • Document presence/absence of:

    • Subperiosteal abscess

    • Bone necrosis

    • Intracranial extension

• Treatment Plan

  • Antibiotics prescribed

  • Any surgical intervention planned/performed

Common Synonyms

• Mastoid bone infection

• Mastoid air cell infection

• Infected mastoid

• Post-ear infection complication

Coding Conflicts

Excludes1:

• Chronic mastoiditis

• Tuberculosis of mastoid

Excludes2:

• Petrositis

• Acute otitis media without mastoiditis

Scribing.io Automation

The AI scribe automatically identifies and captures:

• Temporal terms indicating acuity

• Anatomical references to mastoid region

• Infectious process descriptors

• Treatment documentation

• Relevant physical exam findings

• Associated symptoms

Keywords are flagged for CDI review when documentation patterns suggest mastoiditis but lack specific required elements.