ICD-10 Guide

Molar Pregnancy

ICD-10 Coding for Molar Pregnancy(O01.0, O01.1)

PRIMARY SPECIALTYObstetrics

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Molar Pregnancy?

Essential facts and insights about Molar Pregnancy

Key Clinical Considerations:

Vaginal bleeding in early pregnancy
Uterine enlargement greater than expected for gestational age
Elevated serum beta-hCG levels
Ultrasound findings of a 'snowstorm' pattern or absence of a fetal heartbeat

Clinical Information

Clinical Criteria & Documentation Requirements

Patient history including symptoms and duration
Results of serum beta-hCG tests and ultrasound findings
Assessment of uterine size and any complications

Coding Guidelines

Usage Guidelines & Examples

Use O01.0 for complete moles and O01.1 for partial moles.
Common errors include misclassifying the type of mole.

Code Exclusions

Important Exclusions

Normal pregnancies and other types of gestational trophoblastic disease.
ICD codes for ectopic pregnancies.

Specialty Focus

Primary Specialty

Obstetrics

Specialty Applications

Women of reproductive age, especially those with a history of molar pregnancies.
Obstetric clinics and emergency departments.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document all clinical findings, test results, and patient history.

Billing considerations?

Ensure accurate coding to reflect the type of molar pregnancy for proper reimbursement.

Molar Pregnancy

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

Documentation requirements?

Billing considerations?

Molar Pregnancy

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

Documentation requirements?

Billing considerations?