P08.22 Prolonged gestation of newborn

The ICD-10-CM code for Prolonged gestation of newborn is P08.22 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

16: Certain conditions originating in the perinatal period (P00-P96)

Section

P05-P08: Disorders of newborn related to length of gestation and fetal growth (P05-P08)

Category P08

6 codes (4 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to P08.22:

• Newborn (infant) (liveborn) (singleton) › prolonged gestation (over 42 completed weeks)
• Postmaturity, postmature (over 42 weeks) › newborn
• Prolonged, prolongation (of) › gestation (over 42 completed weeks) › newborn

Inclusion Terms

• Newborn with gestation period over 42 completed weeks (294 days or more), not heavy- or large-for-dates.
• Postmaturity NOS

U.S. Hospital Utilization

• An estimated 675 U.S. inpatient stays in 2023 included P08.22 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Use of Z05 codes (newborn suspected condition ruled out)

1) Use of Z05 codes Assign a code from category Z05, Observation and evaluation of newborn for suspected diseases and conditions ruled out, to identify those instances when a healthy newborn is evaluated for a suspected condition/disease that is determined after study not to be present. Do not use a code from category Z05 when the patient is documented to have signs or symptoms of a suspected problem; in such cases code the sign or symptom.

Z05 on other than the birth record

2) Z05 on other than the birth record A code from category Z05 may also be assigned as a principal or first- listed code for readmissions or encounters when the code from category Z38 code no longer applies. Codes from category Z05 are for use only for healthy newborns and infants for which no condition after study is found to be present.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference P08.22 with the canonical source and edition:

P08.22 — Prolonged gestation of newborn. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/P08.22

Canonical URL: https://icd10codingpro.com/codes/P08.22