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ICD-10 Guide
ICD-10 CodesN73.5

N73.5

Billable

Female pelvic peritonitis, unspecified

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N73.5 is a billable code used to indicate a diagnosis of female pelvic peritonitis, unspecified.

Key Diagnostic Point:

Female pelvic peritonitis is an inflammatory condition affecting the peritoneum in the pelvic cavity, often resulting from infections that spread from adjacent organs such as the uterus, fallopian tubes, and ovaries. This condition can arise from various gynecological infections, including salpingitis (inflammation of the fallopian tubes), oophoritis (inflammation of the ovaries), pelvic inflammatory disease (PID), endometritis (inflammation of the endometrium), and cervicitis (inflammation of the cervix). Symptoms may include abdominal pain, fever, and abnormal vaginal discharge. Diagnosis typically involves a combination of clinical evaluation, imaging studies, and laboratory tests to identify the underlying cause. Treatment often includes broad-spectrum antibiotics to address the infection, and in some cases, surgical intervention may be necessary to drain abscesses or remove infected tissue. Accurate coding of N73.5 is crucial for proper reimbursement and tracking of healthcare outcomes related to pelvic inflammatory conditions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between various types of pelvic inflammatory diseases.
  • Identifying the specific underlying cause of peritonitis.
  • Documentation of clinical symptoms and diagnostic tests.
  • Potential for concurrent diagnoses that may complicate coding.

Audit Risk Factors

  • Inadequate documentation of the clinical rationale for diagnosis.
  • Failure to specify the underlying cause of peritonitis.
  • Inconsistent coding of related gynecological conditions.
  • Lack of supporting lab or imaging results.

Specialty Focus

Medical Specialties

Gynecology

Documentation Requirements

Detailed clinical notes including symptoms, diagnostic tests, and treatment plans.

Common Clinical Scenarios

Patients presenting with abdominal pain, fever, and abnormal discharge, often following a history of PID or other gynecological infections.

Billing Considerations

Ensure that all related conditions are documented to support the diagnosis of pelvic peritonitis.

Infectious Disease

Documentation Requirements

Comprehensive history of infections, treatment responses, and any complications.

Common Clinical Scenarios

Patients with recurrent infections leading to pelvic inflammatory disease and subsequent peritonitis.

Billing Considerations

Focus on the infectious etiology and response to antibiotic therapy.

Coding Guidelines

Inclusion Criteria

Use N73.5 When
  • According to ICD
  • 10 coding guidelines, N73
  • 5 should be used when the specific cause of pelvic peritonitis is not documented
  • Coders should ensure that all relevant clinical information is captured to support the diagnosis and treatment provided

Exclusion Criteria

Do NOT use N73.5 When
  • Exclusion criteria include conditions that are not classified as pelvic peritonitis

Related ICD-10 Codes

Related CPT Codes

58150CPT Code

Total abdominal hysterectomy

Clinical Scenario

Performed in cases of severe pelvic inflammatory disease with peritonitis.

Documentation Requirements

Operative report detailing the procedure and indication.

Specialty Considerations

Gynecological documentation must support the need for surgery.

49000CPT Code

Drainage of abdominal abscess

Clinical Scenario

Used when an abscess is present due to pelvic peritonitis.

Documentation Requirements

Detailed notes on the abscess location and drainage procedure.

Specialty Considerations

Infectious disease documentation should support the need for drainage.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of pelvic inflammatory diseases, including pelvic peritonitis. This specificity aids in better tracking of disease prevalence and treatment outcomes, although it requires more detailed documentation from healthcare providers.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of pelvic inflammatory diseases, including pelvic peritonitis. This specificity aids in better tracking of disease prevalence and treatment outcomes, although it requires more detailed documentation from healthcare providers.

Reimbursement & Billing Impact

reimbursement and to avoid claim denials.

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 are the common causes of female pelvic peritonitis?

Common causes include infections from salpingitis, oophoritis, pelvic inflammatory disease, endometritis, and cervicitis. These infections can spread to the peritoneum, leading to inflammation.

How is pelvic peritonitis diagnosed?

Diagnosis typically involves a thorough clinical evaluation, imaging studies such as ultrasound or CT scans, and laboratory tests to identify any underlying infections.

What treatments are available for pelvic peritonitis?

Treatment usually includes broad-spectrum antibiotics to combat infection, and in severe cases, surgical intervention may be necessary to drain abscesses or remove infected tissue.