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v1.0.0
ICD-10 Guide
ICD-10 CodesA74.89

A74.89

Other chlamydial diseases

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A74.89 is a billable code used to indicate a diagnosis of other chlamydial diseases.

Key Diagnostic Point:

Chlamydial infections are caused by the bacterium Chlamydia trachomatis, which can lead to a variety of diseases affecting different body systems. While the most commonly recognized manifestations are urogenital infections, including cervicitis and urethritis, chlamydia can also cause respiratory infections, particularly in infants and young children. In adults, respiratory chlamydial infections may present as atypical pneumonia. The clinical presentation can vary widely, with some patients being asymptomatic, especially in urogenital infections. Symptoms may include abnormal vaginal discharge, pelvic pain, and dysuria in women, while men may experience urethral discharge and pain during urination. In infants, chlamydial pneumonia can manifest with cough, wheezing, and difficulty breathing. The diagnosis is typically made through nucleic acid amplification tests (NAATs) or culture. Treatment usually involves antibiotics, but the presence of co-infections or complications can complicate management. Accurate coding for chlamydial diseases is essential for appropriate treatment and epidemiological tracking.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations (urogenital vs. respiratory)
  • Potential for asymptomatic cases
  • Need for specific diagnostic tests (NAATs)
  • Differentiation from other sexually transmitted infections

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify the type of chlamydial infection
  • Misdiagnosis due to overlapping symptoms with other infections
  • Lack of supporting lab results

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, lab results, and treatment plans.

Common Clinical Scenarios

Diagnosis and management of chlamydial infections, including complications.

Billing Considerations

Ensure documentation reflects the specific type of chlamydial disease being treated.

Pediatrics

Documentation Requirements

Thorough history of exposure, symptoms, and diagnostic testing.

Common Clinical Scenarios

Chlamydial pneumonia in infants and children.

Billing Considerations

Documenting maternal history of chlamydia to assess risk in newborns.

Coding Guidelines

Inclusion Criteria

Use A74.89 When
  • According to ICD
  • 10 guidelines, A74
  • 89 is used when the specific type of chlamydial disease is not classified elsewhere
  • Coders must ensure that the documentation supports the use of this code and that it is not used when a more specific code is available

Exclusion Criteria

Do NOT use A74.89 When
No specific exclusions found.

Related CPT Codes

87491CPT Code

Chlamydia trachomatis, amplified probe technique

Clinical Scenario

Used for testing in suspected chlamydial infections.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Infectious disease specialists should ensure comprehensive testing.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of chlamydial diseases, improving the accuracy of epidemiological data and treatment tracking. A74.89 captures a broader range of conditions, which can enhance patient care and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of chlamydial diseases, improving the accuracy of epidemiological data and treatment tracking. A74.89 captures a broader range of conditions, which can enhance patient care and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of chlamydial diseases, improving the accuracy of epidemiological data and treatment tracking. A74.89 captures a broader range of conditions, which can enhance patient care and resource allocation.

Resources

Clinical References

  • •
    CDC Chlamydia Fact Sheet

Coding & Billing References

  • •
    CDC Chlamydia Fact Sheet

Frequently Asked Questions

What are the common symptoms of chlamydial infections?

Common symptoms include abnormal discharge, pelvic pain, dysuria, and in infants, respiratory distress. Many individuals may be asymptomatic.

How is chlamydia diagnosed?

Chlamydia is diagnosed primarily through nucleic acid amplification tests (NAATs) or culture, which are highly sensitive and specific.

What is the treatment for chlamydial infections?

Treatment typically involves antibiotics such as azithromycin or doxycycline, depending on the specific infection and patient factors.