ICD-10 Diagnosis Code T70.29XD

Other effects of high altitude, subsequent encounter

Diagnosis Code T70.29XD

ICD-10: T70.29XD
Short Description: Other effects of high altitude, subsequent encounter
Long Description: Other effects of high altitude, subsequent encounter
This is the 2018 version of the ICD-10-CM diagnosis code T70.29XD

Valid for Submission
The code T70.29XD is valid for submission for HIPAA-covered transactions.

Code Classification
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Other and unspecified effects of external causes (T66-T78)
      • Effects of air pressure and water pressure (T70)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code T70.29XD is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Present on Admission (POA) Additional informationCallout TooltipPresent on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

The code T70.29XD is exempt from POA reporting.

  • Acute mountain sickness
  • Aerodontalgia
  • Altitude edema
  • Andes disease
  • Anoxia caused by high altitude
  • Barotrauma of ascent
  • Barotrauma of descent
  • Barotrauma of descent
  • Chronic mountain sickness
  • Ebullism
  • Erythrocytosis caused by low atmospheric pressure
  • Erythrocytosis due to tissue hypoxemia
  • Gastrointestinal barotrauma
  • Headache caused by high altitude
  • High altitude pulmonary edema
  • High altitude pulmonary hypertension
  • High altitude retinopathy
  • Local pressure effects
  • Pulmonary barotrauma
  • Pulmonary hypertension due to lung disease and/or hypoxia
  • Subacute mountain sickness
  • Visceral decompression injury

Information for Patients


Barotrauma means injury to your body because of changes in barometric (air) or water pressure. One common type happens to your ear. A change in altitude may cause your ears to hurt. This can happen if you are flying in an airplane, driving in the mountains, or scuba diving. Divers can also get decompression sickness, which affects the whole body.

Common symptoms of ear barotrauma include

  • Pain
  • A feeling that your ears are stuffed
  • Hearing loss
  • Dizziness

Treatments for ear barotrauma include chewing gum and yawning to relieve the pressure. Medications such as decongestants may also help.

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