T70.3

Caisson disease [decompression sickness]

Not billable — category only FY2026 2025-10-01 → 2026-09-30

Exclusions 2 never code together

Excludes2

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter

D subsequent encounter

S sequela

Instructional notes 5

Inclusion terms

Notes

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.

Use additional code

Index entries leading here 20

Aerobullosis T70.3
Aeroembolism T70.3
Air
- compressed, disease T70.3
Arthralgia (allergic) — see also Pain, joint
- in caisson disease T70.3
Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
- due to or associated with
  - caisson disease T70.3
- in (due to)
  - caisson disease T70.3
Effect, adverse
- atmospheric pressure T70.9
  - high T70.3
Bends T70.3
Disease, diseased — see also Syndrome
- caisson T70.3
- compressed air T70.3
Osteonecrosis M87.9
- secondary NEC M87.30
  - in
    - caisson disease T70.3
      - metatarsus T70.3
      - ilium T70.3
      - ischium T70.3
      - metacarpus T70.3
      - multiple sites T70.3
      - neck T70.3
      - radius T70.3
      - rib T70.3
      - scapula T70.3
      - skull T70.3
      - tarsus T70.3
      - tibia T70.3
      - toe T70.3
      - ulna T70.3
      - vertebra T70.3
      - carpus T70.3
      - clavicle T70.3
      - femur T70.3
      - fibula T70.3
      - finger T70.3
      - humerus T70.3
Caisson disease T70.3
Chokes (resulting from bends) T70.3
Sickness
- compressed air T70.3
- decompression T70.3
Paralysis, paralytic (complete) (incomplete) G83.9
- compressed air T70.3
- diver's T70.3
Compressed air disease T70.3
Compression
- diver's squeeze T70.3
Decompression sickness T70.3
Palsy G83.9
- diver's T70.3
Diver's palsy, paralysis or squeeze T70.3
Dysbarism T70.3
Squeeze, diver's T70.3

Alongside this code 6 same parent — T70

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.