S30.86AA vs S30.86AS
S30.86AA (Insect bite (nonvenomous) of flank, initial encounter) compared with S30.86AS (Insect bite (nonvenomous) of flank, sequela), from the official CMS tabular data. S30.86AA and S30.86AS code the same injury at a different phase of treatment.
Can these codes be reported together?
Same injury, other encounter phase. S30.86AA and S30.86AS 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
| S30.86AAInsect bite (nonvenomous) of flank, initial encounter | S30.86ASInsect bite (nonvenomous) of flank, 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 | Insect bite (nonvenomous) of flank, initial encounter is a billable ICD-10-CM diagnosis code (S30.86AA). | Insect bite (nonvenomous) of flank, sequela is a billable ICD-10-CM diagnosis code (S30.86AS). |
| 7th character | The appropriate 7th character is to be added to each code from category S30 | The appropriate 7th character is to be added to each code from category S30 |
| Includes | injuries to the abdominal wall injuries to the anus injuries to the buttock injuries to the external genitalia | injuries to the abdominal wall injuries to the anus injuries to the buttock injuries to the external genitalia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources