Is P08.21 a billable ICD-10 code?

Yes. P08.21 (Post-term newborn) is billable and can be used for insurance claims. Always verify payer-specific requirements.

P08.21 ✓ Billable

Post-term newborn

Q: What is ICD-10 code P08.21?

ICD-10-CM code P08.21 stands for "Post-term newborn". It is a billable code in the Certain Conditions Originating in the Perinatal Period chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Certain Conditions Originating in the Perinatal Period

Code

P08.21

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Certain Conditions Originating in the Perinatal Period

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code P08.21?

ICD-10-CM code P08.21 represents Post-term newborn. It is a billable diagnosis code in the Certain Conditions Originating in the Perinatal Period chapter, effective October 1, 2025 – September 30, 2026.

Is P08.21 billable?

Yes. P08.21 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is P08.21 in?

P08.21 belongs to the Certain Conditions Originating in the Perinatal Period chapter (P00–P96) of ICD-10-CM.

Related codes in the P08 category

P08 Disorders of newborn related to long gestation and high birth weight Non-billable P08.0 Exceptionally large newborn baby Billable P08.1 Other heavy for gestational age newborn Billable P08.2 Late newborn, not heavy for gestational age Non-billable P08.22 Prolonged gestation of newborn Billable

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