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P20 ICD-10-CA category: Fetal acidaemia

P20 isn’t a code on its own. Choose one of the 4 codes beneath it, the one the documentation supports.

Official description

P20

Fetal acidaemia

ICD-10-CA · Canada

Codes in P20

P20 isn’t a code on its own. Open the code that matches what the note documents.

P20.0Antepartum fetal acidaemia first noted before onset of labourP20.1Intrapartum fetal acidaemia first noted during labour and deliveryP20.2Fetal acidaemia first noted at birthP20.9Fetal acidaemia, unspecified when first noted

Notes for P20

As CIHI prints them, with any note P20 takes from the headings above it.

Includes

  • Fetal acidosisintrauterine acidosis
  • Conditions that have their origin in the perinatal period even though death or morbidity occurs laterFrom Chapter 16: Certain conditions originating in the perinatal period (P00-P96)

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code to identify any associated manifestations such as hypoxic ischaemic encephalopathy of newborn (P91.6)

Excludes

Conditions classified elsewhere.

  • Diagnosis of asphyxia without substantiated blood values (P96.9)intracranial haemorrhage due to anoxia or hypoxia (P52.-)
  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)tetanus neonatorum (A33)whooping cough (A37.-)From Chapter 16: Certain conditions originating in the perinatal period (P00-P96)

Note

  • Use this category only with documented arterial blood value of pH ≤7.00 and/or base deficit ≥12mmol/L

Where P20 sits

  1. 1ChapterChapter 16: Certain conditions originating in the perinatal period (P00-P96)
  2. 2Block P20-P29Respiratory and cardiovascular disorders specific to the perinatal period
  3. 3Category P20Fetal acidaemia

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See P20 in the CIHI source

Frequently asked questions

Is P20 a valid ICD-10-CA code?

No. P20 (Fetal acidaemia) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 4 codes; record the one the documentation supports.

Where is P20 in ICD-10-CA?

P20 sits under P20-P29 Respiratory and cardiovascular disorders specific to the perinatal period, within Chapter 16: Certain conditions originating in the perinatal period (P00-P96).

What coding notes apply to P20?

ICD-10-CA lists Note, Includes, Use additional code, Excludes notes for P20, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside P20

P22Respiratory distress of newbornP23Congenital pneumoniaP24Neonatal aspiration syndromesP25Interstitial emphysema and related conditions originating in the perinatal periodP26Pulmonary haemorrhage originating in the perinatal periodP27Chronic respiratory disease originating in the perinatal periodP28Other respiratory conditions originating in the perinatal periodP29Cardiovascular disorders originating in the perinatal period