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ICD-10 Coding for Intermittent Asthma(J45.20, J45.21)

Complete ICD-10-CM coding and documentation guide for Intermittent Asthma. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Mild Intermittent AsthmaAsthma with Infrequent Symptoms

Related ICD-10 Code Ranges

Complete code families applicable to Intermittent Asthma

J45.2Primary Range

Mild intermittent asthma

This range includes all codes related to mild intermittent asthma, specifying complications such as exacerbation or status asthmaticus.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
J45.20Mild intermittent asthma, uncomplicatedUse when asthma is mild and symptoms are infrequent without complications.
  • Symptoms ≤2 days/week
  • Nighttime awakenings ≤2x/month
  • FEV1 ≥80% predicted
J45.21Mild intermittent asthma with (acute) exacerbationUse when there is an acute exacerbation of mild intermittent asthma.
  • Increased albuterol use (>4x/week)
  • Peak flow <80% personal best

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for intermittent asthma

Essential facts and insights about Intermittent Asthma

The ICD-10 code for mild intermittent asthma is J45.20 for uncomplicated cases, J45.21 for cases with acute exacerbation, and J45.22 for status asthmaticus.

Primary ICD-10-CM Codes for intermittent asthma

Mild intermittent asthma, uncomplicated
Billable Code

Decision Criteria

clinical Criteria

  • Documented symptom frequency and severity

Applicable To

  • Mild intermittent asthma without complications

Excludes

  • Persistent asthma
  • Asthma with acute exacerbation

Clinical Validation Requirements

  • Symptoms ≤2 days/week
  • Nighttime awakenings ≤2x/month
  • FEV1 ≥80% predicted

Code-Specific Risks

  • Misclassification if severity or frequency is not documented

Coding Notes

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

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Exposure to environmental tobacco smoke

Z77.22
Use when exposure to tobacco smoke is a known trigger.

Exposure to other environmental allergens

Z77.098
Use when allergens like pollen or dust mites are triggers.

Acute bronchitis

J20.9
Use if exacerbation is due to a viral infection.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Unspecified asthma with acute exacerbation

J45.901
Use J45.901 when asthma type or severity is not documented.

Mild intermittent asthma with status asthmaticus

J45.22
Use J45.22 when status asthmaticus is present.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Intermittent Asthma to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code J45.20.

Impact

Clinical: Impacts treatment decisions., Regulatory: May lead to coding audits., Financial: Affects reimbursement rates.

Mitigation Strategy

Use standardized templates., Educate providers on documentation requirements.

Impact

Reimbursement: May lead to lower reimbursement rates., Compliance: Increases risk of audits and denials., Data Quality: Decreases accuracy of clinical data.

Mitigation Strategy

Ensure documentation specifies 'intermittent' and 'mild' when applicable.

Impact

Lack of specificity in asthma documentation can trigger audits.

Mitigation Strategy

Ensure detailed documentation of asthma type and triggers.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Intermittent Asthma, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Intermittent Asthma

Use these documentation templates to ensure complete and accurate documentation for Intermittent Asthma. These templates include all required elements for proper coding and billing.

Primary Care Visit for Asthma Management

Specialty: Family Medicine

Required Elements

  • Symptom frequency
  • Medication use
  • Trigger identification

Example Documentation

34yoF with mild intermittent asthma presents with 2-day history of wheezing and increased albuterol use.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Asthma flare-up, give albuterol.
Good Documentation Example
Mild intermittent asthma with acute exacerbation due to pollen exposure.
Explanation
The good example specifies severity, type, and trigger.

Need help with ICD-10 coding for Intermittent Asthma? Ask your questions below.

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