S17.9XXA (Crushing injury of neck, part unspecified, initial encounter) compared with S17.9XXS (Crushing injury of neck, part unspecified, sequela), from the official CMS tabular data. S17.9XXA and S17.9XXS 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. S17.9XXA and S17.9XXS 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.
| S17.9XXACrushing injury of neck, part unspecified, initial encounter | S17.9XXSCrushing injury of neck, part unspecified, sequela | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, poisoning and certain other consequences of external causes | S00-T88 — Injury, poisoning and certain other consequences of external causes |
| Definition | Crushing injury of neck, part unspecified, initial encounter is a billable ICD-10-CM diagnosis code (S17.9A). | Crushing injury of neck, part unspecified, sequela is a billable ICD-10-CM diagnosis code (S17.9S). |
| 7th character | The appropriate 7th character is to be added to each code from category S17 | The appropriate 7th character is to be added to each code from category S17 |
| Includes | injuries of nape injuries of supraclavicular region injuries of throat | injuries of nape injuries of supraclavicular region injuries of throat |
| Use additional code | code for all associated injuries, such as: injury of blood vessels (S15.-) open wound of neck (S11.-) | code for all associated injuries, such as: injury of blood vessels (S15.-) open wound of neck (S11.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources