| Code | Description |
| F55.0 | Abuse of antacids |
| T47.1X1A | Poisoning by other antacids and anti-gastric-secretion drugs, accidental (unintentional), initial encounter |
| T47.1X1D | Poisoning by other antacids and anti-gastric-secretion drugs, accidental (unintentional), subsequent encounter |
| T47.1X1S | Poisoning by other antacids and anti-gastric-secretion drugs, accidental (unintentional), sequela |
| T47.1X2A | Poisoning by other antacids and anti-gastric-secretion drugs, intentional self-harm, initial encounter |
| T47.1X2D | Poisoning by other antacids and anti-gastric-secretion drugs, intentional self-harm, subsequent encounter |
| T47.1X2S | Poisoning by other antacids and anti-gastric-secretion drugs, intentional self-harm, sequela |
| T47.1X3A | Poisoning by other antacids and anti-gastric-secretion drugs, assault, initial encounter |
| T47.1X3D | Poisoning by other antacids and anti-gastric-secretion drugs, assault, subsequent encounter |
| T47.1X3S | Poisoning by other antacids and anti-gastric-secretion drugs, assault, sequela |
| T47.1X4A | Poisoning by other antacids and anti-gastric-secretion drugs, undetermined, initial encounter |
| T47.1X4D | Poisoning by other antacids and anti-gastric-secretion drugs, undetermined, subsequent encounter |
| T47.1X4S | Poisoning by other antacids and anti-gastric-secretion drugs, undetermined, sequela |
| T47.1X5A | Adverse effect of other antacids and anti-gastric-secretion drugs, initial encounter |
| T47.1X5D | Adverse effect of other antacids and anti-gastric-secretion drugs, subsequent encounter |
| T47.1X5S | Adverse effect of other antacids and anti-gastric-secretion drugs, sequela |
| T47.1X6A | Underdosing of other antacids and anti-gastric-secretion drugs, initial encounter |
| T47.1X6D | Underdosing of other antacids and anti-gastric-secretion drugs, subsequent encounter |
| T47.1X6S | Underdosing of other antacids and anti-gastric-secretion drugs, sequela |