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Home/Diagnosis/ICD-10 Coding for Chronic Asthma

ICD-10 Coding for Chronic Asthma

J45.20
J45.40
J45.51

Complete ICD-10-CM coding and documentation guide for icd-10 coding for chronic asthma includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Persistent Asthma
Chronic Asthmatic Bronchitis
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Key Information: ICD-10 Coding for Chronic Asthma

Essential facts and insights about ICD-10 Coding for Chronic Asthma

Use ICD-10 code J45.20 for mild intermittent asthma, uncomplicated, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Mild intermittent asthma, uncomplicated

Billable Code
J45.20
Billable

Diagnostic Criteria

clinical:
  • • Symptoms less than twice a week
  • • Normal FEV1 between exacerbations

Applicable To

  • • Mild intermittent asthma without exacerbation

Important Notes

  • • Ensure documentation specifies 'mild intermittent' to avoid unspecified codes.

Moderate persistent asthma, uncomplicated

Billable Code
J45.40
Billable

Diagnostic Criteria

clinical:
  • • Daily symptoms
  • • FEV1 60-80% predicted

Applicable To

  • • Moderate persistent asthma without exacerbation

Important Notes

  • • Document daily symptoms and lung function to support this code.

Severe persistent asthma, with exacerbation

Billable Code
J45.51
Billable

Diagnostic Criteria

clinical:
  • • FEV1 <60%
  • • Frequent exacerbations

Applicable To

  • • Severe persistent asthma with acute exacerbation

Important Notes

  • • Ensure exacerbation details are documented to justify this code.
Ancillary Codes

Additional codes that may be used with this diagnosis

R06.02

Shortness of breath

Use when documenting acute episodes of dyspnea.

Z72.0

Tobacco use

Document if tobacco use is a contributing factor.

Frequently Asked Questions

What is the ICD-10 code for chronic asthma?

The ICD-10 code for chronic asthma varies by severity: J45.20 for mild intermittent, J45.40 for moderate persistent, and J45.51 for severe persistent with exacerbation.

How is chronic asthma documented?

Chronic asthma documentation should include symptom frequency, lung function results, and any exacerbation details to support accurate coding.

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