S01.102A (Unspecified open wound of left eyelid and periocular area, initial encounter) compared with S01.102S (Unspecified open wound of left eyelid and periocular area, sequela), from the official CMS tabular data. S01.102A and S01.102S 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. S01.102A and S01.102S 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.
| S01.102AUnspecified open wound of left eyelid and periocular area, initial encounter | S01.102SUnspecified open wound of left eyelid and periocular area, 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 | Unspecified open wound of left eyelid and periocular area, initial encounter is a billable ICD-10-CM diagnosis code (S01.102A). | Unspecified open wound of left eyelid and periocular area, sequela is a billable ICD-10-CM diagnosis code (S01.102S). |
| 7th character | The appropriate 7th character is to be added to each code from category S01 | The appropriate 7th character is to be added to each code from category S01 |
| Includes | injuries of ear injuries of eye injuries of face [any part] injuries of gum | injuries of ear injuries of eye injuries of face [any part] injuries of gum |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources