ICD-10-CM FY2027 diagnosis code

O30.021: Conjoined twin pregnancy, first trimester

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

O30.021 is a billable ICD-10-CM diagnosis code for conjoined twin pregnancy, first trimester. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

O30.021 questions

Is O30.021 a billable code?

Yes. O30.021 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does O30.021 mean?

O30.021 is the ICD-10-CM code for Conjoined twin pregnancy, first trimester. It is in chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A).

Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.