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Home/Diagnosis/ICD-10 Coding for Asthma

ICD-10 Coding for Asthma

J45.2
J45.3
J45.4

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

Also Known as:
Bronchial Asthma
Reactive Airway Disease
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Key Information: ICD-10 Coding for Asthma

Essential facts and insights about ICD-10 Coding for Asthma

Use ICD-10 code J45.2 for mild intermittent asthma, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Mild intermittent asthma

Non-Billable
J45.2
Non-Billable

Diagnostic Criteria

clinical:
  • • Symptoms occur ≤2 days/week

Applicable To

  • • Asthma with mild intermittent symptoms

Important Notes

  • • Ensure documentation supports the frequency of symptoms.

Mild persistent asthma

Non-Billable
J45.3
Non-Billable

Diagnostic Criteria

clinical:
  • • Symptoms >2 days/week but not daily
  • • Nighttime awakenings 3-4/month

Applicable To

  • • Asthma with mild persistent symptoms

Important Notes

  • • Document frequency and severity accurately.

Moderate persistent asthma

Non-Billable
J45.4
Non-Billable

Diagnostic Criteria

clinical:
  • • Daily symptoms
  • • Nighttime awakenings >1/week but not nightly

Applicable To

  • • Asthma with moderate persistent symptoms

Important Notes

  • • Ensure documentation reflects daily impact.

Severe persistent asthma

Non-Billable
J45.5
Non-Billable

Diagnostic Criteria

clinical:
  • • Symptoms throughout the day
  • • Nighttime awakenings often

Applicable To

  • • Asthma with severe persistent symptoms

Important Notes

  • • Document severity and continuous nature of symptoms.

Unspecified asthma

Non-Billable
J45.9
Non-Billable

Diagnostic Criteria

clinical:
  • • Lack of specific severity documentation

Applicable To

  • • Asthma NOS

Important Notes

  • • Avoid using unspecified codes when possible.
Frequently Asked Questions

What is the ICD-10 code for mild intermittent asthma?

The ICD-10 code for mild intermittent asthma is J45.2. This code is used when asthma symptoms occur less than twice a week and nighttime awakenings are less than twice a month.

How do you code asthma with an acute exacerbation?

For asthma with an acute exacerbation, use the specific severity code with a fifth digit of 1, such as J45.21 for mild intermittent asthma with exacerbation.

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