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v1.0.0
ICD-10 Guide
ICD-10 CodesN98.1

N98.1

Billable

Hyperstimulation of ovaries

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

Code Description

ICD-10 N98.1 is a billable code used to indicate a diagnosis of hyperstimulation of ovaries.

Key Diagnostic Point:

Hyperstimulation of the ovaries, often referred to as Ovarian Hyperstimulation Syndrome (OHSS), is a condition that can occur in women undergoing fertility treatments, particularly those involving hormonal stimulation of the ovaries. This syndrome is characterized by enlarged ovaries and the accumulation of fluid in the abdominal cavity, which can lead to significant discomfort and complications. Symptoms may include abdominal pain, bloating, nausea, vomiting, and in severe cases, shortness of breath due to fluid accumulation in the chest. The condition arises when the ovaries respond excessively to fertility medications, leading to an overproduction of follicles. While mild cases may resolve without intervention, moderate to severe cases require careful monitoring and management to prevent serious complications such as thrombosis, renal failure, or respiratory distress. Understanding the risk factors, including the type of fertility treatment used and the patient's individual response to medication, is crucial for healthcare providers to mitigate the risks associated with hyperstimulation.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of fertility treatment protocols
  • Differentiation from other ovarian disorders
  • Potential for severe complications requiring specific documentation
  • Variability in symptoms and severity among patients

Audit Risk Factors

  • Inadequate documentation of symptoms and treatment
  • Failure to specify severity of hyperstimulation
  • Misclassification with other ovarian disorders
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Reproductive Endocrinology

Documentation Requirements

Detailed records of fertility treatments, patient responses, and any complications.

Common Clinical Scenarios

Patients undergoing IVF or ovulation induction experiencing symptoms of hyperstimulation.

Billing Considerations

Documentation must clearly outline the treatment regimen and any deviations from standard protocols.

Obstetrics and Gynecology

Documentation Requirements

Comprehensive patient history and treatment details, including medication dosages and monitoring results.

Common Clinical Scenarios

Routine monitoring of patients undergoing fertility treatments who present with abdominal pain or bloating.

Billing Considerations

Coders should ensure that all relevant symptoms and treatments are documented to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use N98.1 When
  • According to the ICD
  • CM coding guidelines, N98
  • 1 should be used when there is clear documentation of ovarian hyperstimulation in the context of fertility treatments
  • Coders must ensure that the diagnosis is supported by clinical findings and that any related complications are also documented

Exclusion Criteria

Do NOT use N98.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

58970CPT Code

Oocyte retrieval

Clinical Scenario

Used in conjunction with hyperstimulation treatments during IVF cycles.

Documentation Requirements

Documentation must include indication for oocyte retrieval and patient consent.

Specialty Considerations

Reproductive endocrinologists should ensure that the procedure is linked to the diagnosis of hyperstimulation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like hyperstimulation, improving the accuracy of patient records and facilitating better management of fertility treatments.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like hyperstimulation, improving the accuracy of patient records and facilitating better management of fertility treatments.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like hyperstimulation, improving the accuracy of patient records and facilitating better management of fertility treatments.

Resources

Clinical References

  • •
    American Society for Reproductive Medicine

Coding & Billing References

  • •
    American Society for Reproductive Medicine

Frequently Asked Questions

What are the common symptoms of ovarian hyperstimulation?

Common symptoms include abdominal pain, bloating, nausea, vomiting, and in severe cases, shortness of breath due to fluid accumulation.

How is ovarian hyperstimulation diagnosed?

Diagnosis is based on clinical symptoms, imaging studies showing enlarged ovaries, and laboratory tests indicating fluid shifts and electrolyte imbalances.