What is the ICD-10 code for abnormal glucose in pregnancy?

The ICD-10 code for abnormal glucose in pregnancy is O99.81, used when glucose levels are elevated but do not meet gestational diabetes criteria.

How is gestational diabetes coded differently from abnormal glucose?

Gestational diabetes is coded as O24.4 when confirmed by a 3-hour glucose tolerance test with ≥2 abnormal values.

ICD-10 Coding for Abnormal Glucose in Pregnancy(O99.81, O24.0, O24.3)

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Learn about ICD-10 coding for abnormal glucose in pregnancy, including code O99.81, documentation requirements, and differentiation from gestational diabetes.

Also known as:

Glucose Intolerance in PregnancyHyperglycemia in Pregnancy

Related ICD-10 Code Ranges

Complete code families applicable to Abnormal Glucose in Pregnancy

O00-O9APrimary Range

Pregnancy, childbirth and the puerperium

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
O99.81	Abnormal glucose complicating pregnancy, childbirth, and the puerperium	Use when glucose levels are elevated but do not meet the criteria for gestational diabetes.	1-hour glucose challenge test ≥ 130-140 mg/dL without confirmatory 3-hour GTT
O24.4	Gestational diabetes mellitus	Use when gestational diabetes is confirmed by a 3-hour GTT.	3-hour glucose tolerance test with ≥2 abnormal values

Primary ICD-10-CM Codes

Abnormal glucose complicating pregnancy, childbirth and the puerperium

O99.81

Differential Codes

Alternative codes to consider when ruling out similar conditions

Gestational diabetes mellitusO24.4

Abnormal glucose complicating pregnancyO99.81

Documentation & Coding Risks

Avoid these common issues when documenting Abnormal Glucose in Pregnancy.

Failing to document the type of glucose test performed

Impact

Clinical: Potential misdiagnosis of gestational diabetes., Regulatory: Non-compliance with documentation standards., Financial: Incorrect billing and potential claim denials.

Mitigation

Standardize documentation templates to include test types., Educate staff on the importance of detailed test documentation.

Using O24.4 for elevated 1-hour GCT alone

Impact

Reimbursement: Incorrect DRG assignment and potential overpayment., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Require 3-hour GTT documentation for O24.4.

Incorrect coding of gestational diabetes

Impact

Using O24.4 without confirmatory 3-hour GTT results.

Mitigation

Require documentation of 3-hour GTT results before coding.

Abnormal glucose detected in pregnancy

Document Abnormal Glucose in Pregnancy in one step.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with O99.81.

Primary Code

O99.81

Abnormal glucose complicating pregnancy, childbirth and the puerperium

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ICD-10 codes5

Coding risks5

FAQs2

ICD-10 Coding for Abnormal Glucose in Pregnancy(O99.81, O24.0, O24.3)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for abnormal glucose in pregnancy?

How is gestational diabetes coded differently from abnormal glucose?

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