S03.40XA (Sprain of jaw, unspecified side, initial encounter) compared with S03.40XS (Sprain of jaw, unspecified side, sequela), from the official CMS tabular data. S03.40XA and S03.40XS 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. S03.40XA and S03.40XS 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.
| S03.40XASprain of jaw, unspecified side, initial encounter | S03.40XSSprain of jaw, unspecified side, 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 | Sprain of jaw, unspecified side, initial encounter is a billable ICD-10-CM diagnosis code (S03.40A). | Sprain of jaw, unspecified side, sequela is a billable ICD-10-CM diagnosis code (S03.40S). |
| 7th character | The appropriate 7th character is to be added to each code from category S03 | The appropriate 7th character is to be added to each code from category S03 |
| Includes | avulsion of joint (capsule) or ligament of head laceration of cartilage, joint (capsule) or ligament of head sprain of cartilage, joint (capsule) or ligament of head traumatic hemarthrosis of joint or ligament of head | avulsion of joint (capsule) or ligament of head laceration of cartilage, joint (capsule) or ligament of head sprain of cartilage, joint (capsule) or ligament of head traumatic hemarthrosis of joint or ligament of head |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources