Crystal's MCW Coder Hub🧾 UB‑04 Field Reference
🎯 Purpose
Quick reference for key UB‑04 fields used in facility billing.
🧩 Key Fields
| Field | Description |
|---|---|
| FL 1 | Provider name/address |
| FL 4 | Type of bill |
| FL 12 | Admission date |
| FL 13 | Admission hour |
| FL 14 | Admission type |
| FL 15 | Admission source |
| FL 42-49 | Revenue codes |
| FL 44 | HCPCS/Rates |
| FL 66-69 | Diagnosis codes |
| FL 74 | Principal procedure |
| FL 76 | Attending provider |
🧠 Notes
- Type of bill drives billing logic
- Revenue codes must match HCPCS
- POA indicators required for IP claims