Z00.129 - Encounter for routine child health examination without abnormal findings

Clinical Definition

Cystic fibrosis with acute exacerbation is a genetic disorder characterized by thick, sticky mucus affecting multiple organ systems, specifically during a period of worsening respiratory symptoms requiring intervention.

Documentation Requirements

• Must document genetic confirmation of cystic fibrosis (CF)

• Specify "acute exacerbation" or "acute worsening"

• Document at least one of:

  • Increased cough

  • Increased sputum production

  • Change in sputum characteristics

  • Decreased lung function from baseline

  • New or increased chest infiltrates

• Include severity indicators

• Document treatment changes (e.g., new antibiotics, increased airway clearance)

• Specify any additional organ systems affected

Common Synonyms

• "CF flare-up"

• "CF lung infection"

• "Getting worse/breaking through"

• "Breathing problems getting worse"

• "Need for rescue antibiotics"

Coding Conflicts

Excludes1:

• Mucoviscidosis in other organs

• Initial diagnosis of cystic fibrosis

• Cystic fibrosis carrier state

Must not be coded with:

• Bronchiectasis

• Other chronic pulmonary conditions

Scribing.io Automation

The AI scribe automatically identifies:

• Keywords indicating acute exacerbation ("worsening," "flare," "exacerbation")

• Changes in respiratory symptoms from baseline

• Documentation of new treatments or interventions

• Links to previous CF diagnosis

• Captures pulmonary function test results

• Flags any missing documentation elements needed for coding validation