T51.8X1A vs T51.8X1D
T51.8X1A (Toxic effect of other alcohols, accidental (unintentional), initial encounter) compared with T51.8X1D (Toxic effect of other alcohols, accidental (unintentional), subsequent encounter), from the official CMS tabular data. T51.8X1A and T51.8X1D code the same injury at a different phase of treatment.
Can these codes be reported together?
Same injury, other encounter phase. T51.8X1A and T51.8X1D code the same injury at a different phase of treatment, set by the 7th character.
The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.
Side by side
| T51.8X1AToxic effect of other alcohols, accidental (unintentional), initial encounter | T51.8X1DToxic effect of other alcohols, accidental (unintentional), subsequent encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Toxic effect of other alcohols, accidental (unintentional), initial encounter is a billable ICD-10-CM diagnosis code (T51.8X1A). | Toxic effect of other alcohols, accidental (unintentional), subsequent encounter is a billable ICD-10-CM diagnosis code (T51.8X1D). |
| 7th character | The appropriate 7th character is to be added to each code from category T51 | The appropriate 7th character is to be added to each code from category T51 |
| Includes | Toxic effect of other alcohols NOS | Toxic effect of other alcohols NOS |
| Use additional code | code(s): for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70) personal history of foreign body fully removed (Z87.821) | code(s): for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70) personal history of foreign body fully removed (Z87.821) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources