| Billable | No — use a more specific child code |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Injuries to the knee and lower leg (S80-S89) |
| Parent code | S89 — Other and unspecified injuries of lower leg |
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |