Loop 2300/FL 4

The 4-digit type of bill code appears as follows:

• The first digit is a zero
• The second digit in the code identifies the type of provider; for example, a hospital
• The third digit classifies the type of care; for example, outpatient care versus inpatient care
• The fourth may be a letter or number that indicates the sequence or frequency of the bill within a particular episode of care

For details on claim coding for adjustment and late charge claims, review the Medicare Claims Processing Manual, Chapter 1.