T65.843A vs T65.843D
T65.843A (Toxic effect of xylazine, assault, initial encounter) compared with T65.843D (Toxic effect of xylazine, assault, subsequent encounter), from the official CMS tabular data. T65.843A and T65.843D code the same injury at a different phase of treatment.
Can these codes be reported together?
Same injury, other encounter phase. T65.843A and T65.843D 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
| T65.843AToxic effect of xylazine, assault, initial encounter | T65.843DToxic effect of xylazine, 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 xylazine, assault, initial encounter is a billable ICD-10-CM diagnosis code (T65.843A). | Toxic effect of xylazine, assault, subsequent encounter is a billable ICD-10-CM diagnosis code (T65.843D). |
| 7th character | The appropriate 7th character is to be added to each code from category T65 | The appropriate 7th character is to be added to each code from category T65 |
| Use additional code | code(s) for all associated manifestations, such as: cellulitis and acute lymphangitis (L03.-) cutaneous abscess, furuncle and carbuncle (L02.-) | code(s) for all associated manifestations, such as: cellulitis and acute lymphangitis (L03.-) cutaneous abscess, furuncle and carbuncle (L02.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources