T57.93XA vs T57.93XD
T57.93XA (Toxic effect of unspecified inorganic substance, assault, initial encounter) compared with T57.93XD (Toxic effect of unspecified inorganic substance, assault, subsequent encounter), from the official CMS tabular data. T57.93XA and T57.93XD code the same injury at a different phase of treatment.
Can these codes be reported together?
Same injury, other encounter phase. T57.93XA and T57.93XD 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
| T57.93XAToxic effect of unspecified inorganic substance, assault, initial encounter | T57.93XDToxic effect of unspecified inorganic substance, assault, 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 unspecified inorganic substance, assault, initial encounter is a billable ICD-10-CM diagnosis code (T57.93A). | Toxic effect of unspecified inorganic substance, assault, subsequent encounter is a billable ICD-10-CM diagnosis code (T57.93D). |
| 7th character | The appropriate 7th character is to be added to each code from category T57 | The appropriate 7th character is to be added to each code from category T57 |
| 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