What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).
When is it used?
- May be used when a clinician documents late pregnancy in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
15Pregnancy, childbirth and the puerperium (O00-O9A)
block
O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems
currentO30-O48
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
ObstetricianGynecologist
Sibling codes
O30Multiple gestationO31Complications specific to multiple gestationO32Maternal care for malpresentation of fetusO33Maternal care for disproportionO34Maternal care for abnormality of pelvic organsO35Maternal care for known or suspected fetal abnormality and damageO36Maternal care for other fetal problemsO40PolyhydramniosO41Other disorders of amniotic fluid and membranesO42Premature rupture of membranesO43Placental disordersO44Placenta previaO45Premature separation of placenta [abruptio placentae]O46Antepartum hemorrhage, not elsewhere classifiedO47False labor
Mapped diagnoses and classifications
SNOMED_CT 124735008high
Late onset of labour
Source: SNOMED International ICD-10 map
SNOMED_CT 276616001high
Long fetal gestation
Source: SNOMED International ICD-10 map
SNOMED_CT 102879009high
Post-term delivery
Source: SNOMED International ICD-10 map
SNOMED_CT 90968009high
Post-term pregnancy
Source: SNOMED International ICD-10 map
SNOMED_CT 22281000119101high
Post-term pregnancy of 40 to 42 weeks
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
O48
Replacement codes
O48.0 — Post-term pregnancyO48.1 — Prolonged pregnancy
Common synonyms
Late pregnancy
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.