ICD-10-CM Codes
S00-T88 Injury, poisoning and certain other consequences of external causes
T66-T78 Other and unspecified effects of external causes
T70- Effects of air pressure and water pressure

2020 ICD-10-CM Diagnosis Code T70.2

Other and unspecified effects of high altitude

2016

2017

2018

2019

2020

Non-Billable/Non-Specific Code

T70.2 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2020 edition of ICD-10-CM T70.2 became effective on October 1, 2019.
This is the American ICD-10-CM version of T70.2 - other international versions of ICD-10 T70.2 may differ.

Type 2 Excludes

Type 2 Excludes Help

A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (T70.2) and the excluded code together.

polycythemia due to high altitude (
ICD-10-CM Diagnosis Code D75.1
Secondary polycythemia
Applicable To
- Acquired polycythemia
- Emotional polycythemia
- Erythrocytosis NOS
- Hypoxemic polycythemia
- Nephrogenous polycythemia
- Polycythemia due to erythropoietin
- Polycythemia due to fall in plasma volume
- Polycythemia due to high altitude
- Polycythemia due to stress
- Polycythemia NOS
- Relative polycythemia
Type 1 Excludes
- polycythemia neonatorum (P61.1)
- polycythemia vera (D45)
D75.1
)

The following code(s) above T70.2 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to T70.2:

S00-T88
2020 ICD-10-CM Range S00-T88
Injury, poisoning and certain other consequences of external causes
Note
- 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
Type 1 Excludes
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
Use Additional
- code to identify any retained foreign body, if applicable (Z18.-)
Injury, poisoning and certain other consequences of external causes

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change

Code annotations containing back-references to T70.2:

Type 1 Excludes: T71

ICD-10-CM Diagnosis Code T71
Asphyxiation
Applicable To
- Mechanical suffocation
- Traumatic suffocation
Type 1 Excludes
- acute respiratory distress (syndrome) (J80)
- anoxia due to high altitude (T70.2)
- asphyxia NOS (R09.01)
- asphyxia from carbon monoxide (T58.-)
- asphyxia from inhalation of food or foreign body (T17.-)
- asphyxia from other gases, fumes and vapors (T59.-)
- respiratory distress (syndrome) in newborn (P22.-)

ICD-10-CM Codes Adjacent To T70.2

T69.9XXS …… sequela

T70 Effects of air pressure and water pressure

T70.0 Otitic barotrauma

T70.0XXA …… initial encounter

T70.0XXD …… subsequent encounter

T70.0XXS …… sequela

T70.1 Sinus barotrauma

T70.1XXA …… initial encounter

T70.1XXD …… subsequent encounter

T70.1XXS …… sequela

T70.2 Other and unspecified effects of high altitude

T70.20 Unspecified effects of high altitude

T70.20XA …… initial encounter

T70.20XD …… subsequent encounter

T70.20XS …… sequela

T70.29 Other effects of high altitude

T70.29XA …… initial encounter

T70.29XD …… subsequent encounter

T70.29XS …… sequela

T70.3 Caisson disease [decompression sickness]

T70.3XXA …… initial encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2020 ICD-10-CM Diagnosis Code T70.2

Other and unspecified effects of high altitude

Secondary polycythemia

Injury, poisoning and certain other consequences of external causes

Asphyxiation