ICD-10 diagnosis code

T70.2 Other and unspecified effects of high altitude

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T70.2 is the ICD-10 code for Other and unspecified effects of high altitude. It is a four-character subcategory of T70 (Effects of air pressure and water pressure), the most specific level in the WHO edition. It belongs to the block T66–T78 (Other and unspecified effects of external causes) in Chapter XIX, Injury, poisoning and certain other consequences of external causes.

Code type
Subcategory (4 characters)
Chapter
XIX · S00–T98
Classification
WHO ICD-10, 2019 version

What T70.2 includes

Conditions and terms that are coded here.

  • Alpine sickness
  • Anoxia due to high altitude
  • Barotrauma NOS
  • Hypobaropathy
  • Mountain sickness

What T70.2 excludes

Conditions that look similar but belong under another code.

  • polycythaemia due to high altitude D75.1

T70.2 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

NorwayICD-10-NO

T70.2Annen eller uspesifisert virkning av stor høyde over havet

DenmarkICD-10-DK

DT702Anden eller ikke specificeret virkning af ophold i stor højde

FinlandICD-10-FI

T70.2Muut tai määrittämättömät korkealla oleskelun vaikutukset

GermanyICD-10-GM

T70.2Sonstige und nicht näher bezeichnete Schäden durch große Höhe

FranceICD-10-FR

T70.2Effets de l'altitude, autres et non précisés

NetherlandsICD-10-NL

T70.2overige en niet-gespecificeerde gevolgen van grote hoogte

United StatesICD-10-CM

Listed through more specific codes:

  • T70.20XAUnspecified effects of high altitude, initial encounter
  • T70.20XDUnspecified effects of high altitude, subsequent encounter
  • T70.20XSUnspecified effects of high altitude, sequela
  • T70.29XAOther effects of high altitude, initial encounter
  • T70.29XDOther effects of high altitude, subsequent encounter
  • T70.29XSOther effects of high altitude, sequela

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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