2026 ICD-10-CM Diagnosis Code P01.2Newborn affected by oligohydramnios

ICD-10-CM Codes›P00–P96›P00-P04›P01

ICD-10-CM P01.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P01.2 is a billable ICD-10-CM diagnosis code for newborn affected by oligohydramnios. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as hydranencephaly. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Newborn affected by maternal conditions or complications of labor/delivery.

Code Identity

ICD-10-CM Code
P01.2
Billable Status
Yes — Valid for Submission
Code Describes
Newborn affected by oligohydramnios
Short Description
Newborn affected by oligohydramnios
Same as the full description in the CMS dataset.
Parent Code
P01
Newborn affected by maternal complications of pregnancy

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP00-P04Newborn affected by maternal factors and by complications of pregnancy, labor, and delivery
CategoryP01Newborn affected by maternal complications of pregnancy
This CodeP01.2Newborn affected by oligohydramnios

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Hydranencephaly
  • MARCH syndrome

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • oligohydramnios due to premature rupture of membranes P01.1

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Newborn(infant) (liveborn) (singleton)
      • affected by
        • maternal (complication of) (use of)
          • oligohydramnios

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PNL010
Newborn affected by maternal conditions or complications of labor/delivery
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hydranencephaly

    a congenital condition where the greater portions of the cerebral hemispheres and corpus striatum are replaced by csf and glial tissue. the meninges and the skull are well formed, which is consistent with earlier normal embryogenesis of the telencephalon. bilateral occlusions of the internal carotid arteries in utero is a potential mechanism. clinical features include intact brainstem reflexes without evidence of higher cortical activity. (menkes, textbook of child neurology, 5th ed, p307)

  • Multinucleated Neurons, Anhydramnios, Renal Dysplasia, Cerebellar Hypoplasia and Hydranencephaly|MARCH

    a lethal autosomal recessive condition caused by mutation(s) in the cep55 gene, encoding centrosomal protein of 55 kda. it is characterized by renal dysplasia, anhydramnios, hydrancephaly, cerebellar hypoplasia, and multinucleated neurons in remaining brain tissue.

  • Hydranencephaly

    a rare congenital brain disorder in which the cerebral hemispheres are absent and replaced by sacs that contain cerebrospinal fluid. signs and symptoms include irritability, increased muscle tone, seizures, and hydrocephalus. the prognosis is poor.

  • Multinucleated Neurons, Anhydramnios, Renal Dysplasia, Cerebellar Hypoplasia And Hydranencephaly|MARCH

    a lethal autosomal recessive condition caused by mutation(s) in the cep55 gene, encoding centrosomal protein of 55 kda. it is characterized by renal dysplasia, anhydramnios, hydrancephaly, cerebellar hypoplasia, and multinucleated neurons in remaining brain tissue.

Convert P01.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
761.2 Oligohydramnios aff NB
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P01.2Overview

Is P01.2 (Newborn affected by maternal complications of pregnancy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report newborn affected by oligohydramnios on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P01.2?

Under the General Equivalence Mappings, newborn affected by oligohydramnios converts to ICD-9-CM 761.2 (oligohydramnios aff NB). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.