ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesO02.81

O02.81

Billable

Inappropriate change in quantitative human chorionic gonadotropin (hCG) in early pregnancy

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/08/2025

Code Description

ICD-10 O02.81 is a billable code used to indicate a diagnosis of inappropriate change in quantitative human chorionic gonadotropin (hcg) in early pregnancy.

Key Diagnostic Point:

Inappropriate changes in quantitative hCG levels during early pregnancy can indicate various complications, including blighted ovum, missed abortion, and incomplete abortion. A blighted ovum occurs when a fertilized egg implants in the uterus but does not develop into an embryo, leading to elevated hCG levels initially, followed by a decline. Missed abortion refers to a situation where the embryo has died but has not been expelled from the uterus, often resulting in stagnant hCG levels. Incomplete abortion occurs when some pregnancy tissue remains in the uterus after a miscarriage, which can also affect hCG levels. Management of these conditions often involves monitoring hCG levels, ultrasound examinations, and potentially surgical interventions such as dilation and curettage (D&C) to remove retained products of conception. Accurate coding of these conditions is crucial for appropriate patient management and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in hCG levels among patients
  • Differentiation between types of pregnancy loss
  • Need for precise documentation of ultrasound findings
  • Potential for overlapping symptoms with other obstetric conditions

Audit Risk Factors

  • Inadequate documentation of hCG levels
  • Failure to specify the type of pregnancy loss
  • Misinterpretation of ultrasound results
  • Incorrect linkage of diagnosis to procedure codes

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed records of hCG levels, ultrasound findings, and patient symptoms are essential for accurate coding.

Common Clinical Scenarios

Patients presenting with abnormal bleeding, pelvic pain, or positive pregnancy tests with declining hCG levels.

Billing Considerations

Consider the timing of hCG testing and the gestational age of the pregnancy when coding.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive documentation of maternal and fetal health, including risk factors and management plans.

Common Clinical Scenarios

High-risk patients with a history of pregnancy loss or complications requiring close monitoring.

Billing Considerations

Focus on the implications of hCG changes on maternal-fetal health and the need for specialized interventions.

Coding Guidelines

Inclusion Criteria

Use O02.81 When
  • Follow official ICD
  • CM guidelines for coding pregnancy
  • related conditions, ensuring accurate documentation of hCG levels and associated clinical findings

Exclusion Criteria

Do NOT use O02.81 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

58120CPT Code

Dilation and curettage (D&C)

Clinical Scenario

Used when a patient has an incomplete abortion requiring surgical intervention.

Documentation Requirements

Document indications for D&C, including hCG levels and ultrasound findings.

Specialty Considerations

Obstetricians should ensure that the procedure is justified based on clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of pregnancy-related conditions, improving the accuracy of diagnoses and facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of pregnancy-related conditions, improving the accuracy of diagnoses and facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of pregnancy-related conditions, improving the accuracy of diagnoses and facilitating better patient management.

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 should I document when coding O02.81?

Document all relevant clinical findings, including hCG levels, ultrasound results, and any symptoms the patient is experiencing. Ensure that the type of pregnancy loss is clearly specified.