T70.3 – Caisson disease [decompression sickness]
ICD-10-CM 2027 diagnosis code · Other and unspecified effects of external causes
- Code
T70.3(claims format:T703)- Description
- Caisson disease [decompression sickness]
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- T66-T78 Other and unspecified effects of external causes
- Parent codes
- T70
Billable codes under T70.3
T70.3 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes for T70.3
- Compressed-air disease
- Diver's palsy or paralysis
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
T70 – Effects of air pressure and water pressure
- The appropriate 7th character is to be added to each code from category T70
Block T66-T78
- , 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-)
Index terms for T70.3
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Bends
- Chokes
- Dysbarism
- Aeroembolism
- Aerobullosis
- Palsy, diver's
- Caisson disease
- Squeeze, diver's
- Compressed air disease
- Decompression sickness
- Sickness, decompression
- Air, compressed, disease
- Sickness, compressed air
- Disease, diseased, caisson
- Compression, diver's squeeze
- Paralysis, paralytic, diver's
- Arthralgia, in caisson disease
- Disease, diseased, compressed air
- Diver's palsy, paralysis or squeeze
- Paralysis, paralytic, compressed air
- Arthritis, arthritic, in, caisson disease
- Effect, adverse, atmospheric pressure, high
- Osteonecrosis, secondary NEC, in, caisson disease
- Osteonecrosis, secondary NEC, in, caisson disease, toe
- Osteonecrosis, secondary NEC, in, caisson disease, rib
Related codes in T70
Frequently asked questions
What is ICD-10 code T70.3?
T70.3 is the ICD-10-CM code for caisson disease [decompression sickness], in the block T66-T78 (Other and unspecified effects of external causes).
Is T70.3 a billable code?
No. T70.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does T70.3 belong to?
It belongs to category T70 – Effects of air pressure and water pressure.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.