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ICD-10 Guide
ICD-10 CodesJ45.5

J45.5

Severe persistent asthma

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 J45.5 is a used to indicate a diagnosis of severe persistent asthma.

Key Diagnostic Point:

Severe persistent asthma is characterized by frequent and severe symptoms that significantly impact daily activities and quality of life. Patients often experience daily symptoms, nighttime awakenings, and require high doses of inhaled corticosteroids or systemic corticosteroids for control. The respiratory system, particularly the bronchi and bronchioles, is primarily affected, leading to inflammation, bronchoconstriction, and increased mucus production. This chronic condition can progress over time, resulting in airway remodeling and decreased lung function if not adequately managed. Diagnostic considerations include a thorough patient history, physical examination, spirometry to assess lung function, and possibly additional tests such as peak flow monitoring. The severity of asthma is classified based on symptom frequency, nighttime awakenings, and the need for rescue medications, making accurate diagnosis essential for effective treatment planning.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors include misclassifying the severity of asthma.
  • Documentation gaps may arise if symptom frequency and treatment regimens are not clearly recorded.
  • Billing challenges often stem from the need for detailed documentation to justify the use of high-cost medications.

Specialty Focus

Medical Specialties

Pulmonology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Allergy and Immunology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Severe persistent asthma significantly affects population health, leading to increased healthcare utilization, including emergency visits and hospitalizations. It poses a considerable burden on patients, impacting their quality of life and productivity. Quality measures focus on reducing exacerbations and improving asthma control, which are critical for enhancing patient outcomes and minimizing healthcare costs.

ICD-9 vs ICD-10

Severe persistent asthma significantly affects population health, leading to increased healthcare utilization, including emergency visits and hospitalizations. It poses a considerable burden on patients, impacting their quality of life and productivity. Quality measures focus on reducing exacerbations and improving asthma control, which are critical for enhancing patient outcomes and minimizing healthcare costs.

Reimbursement & Billing Impact

Reimbursement considerations include the use of high-cost medications and potential for frequent exacerbations that may lead to hospitalizations. Common denials may occur if documentation does not clearly support the severity of the asthma or if coding does not align with the services provided. Best practices include ensuring that all clinical notes are thorough and that treatment plans are well-documented to justify the use of specific codes.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for J00-J99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for J00-J99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by J45.5?

J45.5 covers severe persistent asthma, which includes patients experiencing daily symptoms, frequent nighttime awakenings, and those requiring high doses of medications for control. It may also encompass exacerbations that necessitate emergency care.

When should J45.5 be used instead of related codes?

J45.5 should be used when a patient exhibits severe persistent asthma symptoms that require intensive management, as opposed to moderate or mild forms of asthma which are coded differently.

What documentation supports J45.5?

Documentation should include a detailed history of asthma symptoms, frequency of exacerbations, medication usage, and results from lung function tests such as spirometry.