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ICD-10 Guide
ICD-10 CodesH66.42

H66.42

Billable

Suppurative otitis media, unspecified, left ear

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/12/2025

Code Description

ICD-10 H66.42 is a billable code used to indicate a diagnosis of suppurative otitis media, unspecified, left ear.

Key Diagnostic Point:

Suppurative otitis media is an inflammatory condition of the middle ear characterized by the presence of pus. It typically arises from a bacterial infection following an upper respiratory tract infection, leading to fluid accumulation and pressure in the middle ear. Patients may present with ear pain, fever, irritability in children, and hearing loss. In cases where the condition is unspecified, it indicates that the specific causative organism or the severity of the infection has not been determined. Diagnosis is often made through clinical examination, which may include otoscopy revealing a bulging, red tympanic membrane. Management typically involves analgesics for pain relief, antibiotics for bacterial infections, and in some cases, surgical intervention such as tympanostomy tubes to drain fluid and relieve pressure. The condition can lead to complications such as hearing loss or mastoiditis if not treated appropriately.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and severity of symptoms
  • Differentiation from other types of otitis media (e.g., serous, chronic)
  • Need for precise documentation of symptoms and treatment
  • Potential for complications requiring additional coding

Audit Risk Factors

  • Inadequate documentation of symptoms leading to the diagnosis
  • Failure to specify the left ear when applicable
  • Misclassification of the type of otitis media
  • Lack of follow-up documentation for treatment outcomes

Specialty Focus

Medical Specialties

Otolaryngology

Documentation Requirements

Detailed clinical notes including patient history, examination findings, and treatment plans.

Common Clinical Scenarios

Patients presenting with ear pain, fever, and drainage from the ear.

Billing Considerations

Ensure accurate documentation of the ear affected and any surgical interventions performed.

Pediatrics

Documentation Requirements

Thorough documentation of developmental history and any recurrent episodes of otitis media.

Common Clinical Scenarios

Young children with recurrent ear infections requiring monitoring and potential referral to specialists.

Billing Considerations

Consideration of age-related factors in treatment and coding, especially in cases of recurrent infections.

Coding Guidelines

Inclusion Criteria

Use H66.42 When
  • According to ICD
  • 10 guidelines, H66
  • 42 should be used when the specific type of suppurative otitis media is not documented
  • Coders should ensure that the left ear is specified and that the condition is not classified under other codes for otitis media

Exclusion Criteria

Do NOT use H66.42 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

69436CPT Code

Tympanostomy, bilateral

Clinical Scenario

Used when a patient with recurrent otitis media requires tube placement.

Documentation Requirements

Document the indication for surgery and any prior treatments attempted.

Specialty Considerations

Otolaryngologists should ensure that the diagnosis supports the need for surgical intervention.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of ear conditions, improving the ability to track and manage diseases like suppurative otitis media. H66.42 provides a clear designation for unspecified cases, which aids in treatment planning and epidemiological tracking.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of ear conditions, improving the ability to track and manage diseases like suppurative otitis media. H66.42 provides a clear designation for unspecified cases, which aids in treatment planning and epidemiological tracking.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of ear conditions, improving the ability to track and manage diseases like suppurative otitis media. H66.42 provides a clear designation for unspecified cases, which aids in treatment planning and epidemiological tracking.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the difference between H66.42 and H66.41?

H66.42 is used for acute suppurative otitis media, while H66.41 is for chronic cases. Accurate documentation of the duration and nature of symptoms is essential for correct coding.