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Home/Diagnosis/ICD-10 Coding for Hyperemesis Gravidarum

ICD-10 Coding for Hyperemesis Gravidarum

O21.0
O21.1

Complete ICD-10-CM coding and documentation guide for icd-10 coding for hyperemesis gravidarum includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Severe Morning Sickness
Pregnancy Hyperemesis
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Key Information: ICD-10 Coding for Hyperemesis Gravidarum

Essential facts and insights about ICD-10 Coding for Hyperemesis Gravidarum

Use ICD-10 code O21.0 for mild hyperemesis gravidarum, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Mild hyperemesis gravidarum

Billable Code
O21.0
Billable

Diagnostic Criteria

clinical:
  • • Vomiting ≥3 times/day with 5-9% weight loss
coding:
  • • Symptoms before 20 weeks without metabolic disturbance

Applicable To

  • • Persistent vomiting before 20 weeks gestation

Important Notes

  • • Ensure documentation specifies vomiting frequency and weight loss percentage.

Hyperemesis gravidarum with metabolic disturbance

Billable Code
O21.1
Billable

Diagnostic Criteria

clinical:
  • • Weight loss ≥10%
  • • Hypokalemia (K+ <3.0 mmol/L)
  • • Metabolic alkalosis (HCO3- >30 mmol/L)

Applicable To

  • • Hyperemesis with electrolyte imbalance

Important Notes

  • • Ensure metabolic disturbances are clearly documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z3A.XX

Weeks of gestation

Always include to specify gestational age.

E87.6

Hypokalemia

Use when hypokalemia is present.

Frequently Asked Questions

What is the ICD-10 code for hyperemesis gravidarum?

The ICD-10 code for mild hyperemesis gravidarum is O21.0, while O21.1 is used for cases with metabolic disturbance.

When should O21.1 be used instead of O21.0?

Use O21.1 when hyperemesis gravidarum is accompanied by metabolic disturbances like hypokalemia or alkalosis.

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