21Symptoms, signs or clinical findings, not elsewhere classified Symptoms, signs or clinical findings of blood, blood-forming organs, or the immune system Clinical findings in blood, blood-forming organs, or the immune system MA18Certain clinical findings of blood chemistry
MA18.2
category
Abnormal arterial blood-gas level
Also indexed as
Abnormal arterial blood-gas level Abnormal blood gas level, NOS Arterial blood gas analysis, abnormal Arterial blood pH less than or equal to 7.00 Base deficit greater than or equal to 12mmol/L
Nearby in Certain clinical findings of blood chemistry
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
View this entity in the official WHO ICD-11 browser .
This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
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