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ICD-10-CM 2027

ICD-10 code for mountain

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Mountain”. Page updated September 29, 2026.

About coding mountain

The official ICD-10-CM index doesn't give a single default code for mountain; the code depends on the details below.

More specific mountain codes (official index)

  • sickness T70.29 — Other effects of high altitude
  • with polycythemia , acquired (acute) D75.1 — Secondary polycythemia
  • tick fever A93.2 — Colorado tick fever

Common questions about mountain ICD-10 codes

What is the ICD-10 code for sickness mountain?

T70.29 — Other effects of high altitude (header code; choose a more specific subcode).

What is the ICD-10 code for tick fever mountain?

A93.2 — Colorado tick fever.