S65.492A (Other specified injury of blood vessel of left thumb, initial encounter) compared with S65.492S (Other specified injury of blood vessel of left thumb, sequela), from the official CMS tabular data. S65.492A and S65.492S code the same injury at a different phase of treatment. MedCoder-derived
Same underlying diagnosis, different encounter phase.
The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.
Source: ICD-10-CM Official Guidelines, Section I.C.19.a
Same injury, other encounter phase. S65.492A and S65.492S 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.
| S65.492AOther specified injury of blood vessel of left thumb, initial encounter | S65.492SOther specified injury of blood vessel of left thumb, sequela | |
|---|---|---|
| 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 | Other specified injury of blood vessel of left thumb, initial encounter is a billable ICD-10-CM diagnosis code (S65.492A). | Other specified injury of blood vessel of left thumb, sequela is a billable ICD-10-CM diagnosis code (S65.492S). |
| 7th character | The appropriate 7th character is to be added to each code from category S65 | The appropriate 7th character is to be added to each code from category S65 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources