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T70.29XDBillableSave

T70.29XD - Other effects of high altitude, subsequent encounter

ICD-10-CM Chapter 19: Injury, poisoning and certain other consequences of external causes · T66-T78 Other and unspecified effects of external causes (T66-T78) · Subcategory of T70.29 · FY2027

7th character D: subsequent encounter

Coding Guidance

7th character D: subsequent encounter.

Includes, Excludes and Coding Notes

Excludes 2 — Not Included HereFrom T70.2

Not part of this code; report both codes when the patient has both conditions.

  • polycythemia due to high altitude (D75.1)
Code AlsoFrom T66-T78 Other and unspecified effects of external causes (T66-T78)

Report an additional code when both conditions apply.

  • , if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)
Excludes 2 — Not Included HereFrom Chapter S00-T88

Not part of this code; report both codes when the patient has both conditions.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
Use Additional CodeFrom Chapter S00-T88

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify any retained foreign body, if applicable (Z18.-)
NotesFrom Chapter S00-T88

Instructional notes from the ICD-10-CM tabular list.

  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.