Question 1

Is O99 a billable ICD-10 code?

Accepted Answer

No, O99 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code O99 mean?

Accepted Answer

ICD-10-CM code O99 represents Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code O99 introduced?

Accepted Answer

Code O99 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code O99?

Accepted Answer

The parent category for O99 is section:O94-O9A (Other obstetric conditions, not elsewhere classified (O94-O9A)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions should be coded separately from O99?

Accepted Answer

Code O99 has Type 2 Excludes including: when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36). These conditions are not included in O99 but can be coded together if the patient has both conditions.

Question 6

Should I use additional codes with O99?

Accepted Answer

Yes, when coding O99, consider adding codes for: code to identify specific condition. Additional codes provide more specificity about the patient's condition.

O992026

Excludes11Not coded together

Excludes25Not included here

Use Additional Code2Add code for detail

Notes6Additional information

Includes1Included conditions