| T70 | Effects of air pressure and water pressure | NON-BILLABLE CODE |
| T70.0 | Otitic barotrauma | NON-BILLABLE CODE |
| T70.0XXA | Otitic barotrauma, initial encounter | BILLABLE CODE |
| T70.0XXD | Otitic barotrauma, subsequent encounter | BILLABLE CODE |
| T70.0XXS | Otitic barotrauma, sequela | BILLABLE CODE |
| T70.1 | Sinus barotrauma | NON-BILLABLE CODE |
| T70.1XXA | Sinus barotrauma, initial encounter | BILLABLE CODE |
| T70.1XXD | Sinus barotrauma, subsequent encounter | BILLABLE CODE |
| T70.1XXS | Sinus barotrauma, sequela | BILLABLE CODE |
| T70.2 | Other and unspecified effects of high altitude | NON-BILLABLE CODE |
| T70.20 | Unspecified effects of high altitude | NON-BILLABLE CODE |
| T70.20XA | Unspecified effects of high altitude, initial encounter | BILLABLE CODE |
| T70.20XD | Unspecified effects of high altitude, subsequent encounter | BILLABLE CODE |
| T70.20XS | Unspecified effects of high altitude, sequela | BILLABLE CODE |
| T70.29 | Other effects of high altitude | NON-BILLABLE CODE |
| T70.29XA | Other effects of high altitude, initial encounter | BILLABLE CODE |
| T70.29XD | Other effects of high altitude, subsequent encounter | BILLABLE CODE |
| T70.29XS | Other effects of high altitude, sequela | BILLABLE CODE |
| T70.3 | Caisson disease [decompression sickness] | NON-BILLABLE CODE |
| T70.3XXA | Caisson disease [decompression sickness], initial encounter | BILLABLE CODE |
| T70.3XXD | Caisson disease [decompression sickness], subsequent encounter | BILLABLE CODE |
| T70.3XXS | Caisson disease [decompression sickness], sequela | BILLABLE CODE |
| T70.4 | Effects of high-pressure fluids | NON-BILLABLE CODE |
| T70.4XXA | Effects of high-pressure fluids, initial encounter | BILLABLE CODE |
| T70.4XXD | Effects of high-pressure fluids, subsequent encounter | BILLABLE CODE |
| T70.4XXS | Effects of high-pressure fluids, sequela | BILLABLE CODE |
| T70.8 | Other effects of air pressure and water pressure | NON-BILLABLE CODE |
| T70.8XXA | Other effects of air pressure and water pressure, initial encounter | BILLABLE CODE |
| T70.8XXD | Other effects of air pressure and water pressure, subsequent encounter | BILLABLE CODE |
| T70.9 | Effect of air pressure and water pressure, unspecified | NON-BILLABLE CODE |
| T70.9XXA | Effect of air pressure and water pressure, unspecified, initial encounter | BILLABLE CODE |
| T70.9XXD | Effect of air pressure and water pressure, unspecified, subsequent encounter | BILLABLE CODE |
| T70.9XXS | Effect of air pressure and water pressure, unspecified, sequela | BILLABLE CODE |
