Where should I start with payer payments?
Start with the guide that matches the question in front of you: how to read an 835 remittance, or what CARC 45 means on a payment line.
It depends. If a payment looks low, start with How to read an 835. If a CARC 45 adjustment confused you, read the CARC 45 guide. More guides are added as the product grows.
Key facts, as of October 2026
- Guides
- Two plain-language guides, updated October 20, 2026.
- Topics
- 835 remittances, CARC 45, fee schedules, and payer appeals, as of October 2026.
- Audience
- Independent practices checking what payers actually paid, as of October 2026.
Guides
-
How to read an 835 remittance (ERA)
A plain-language walkthrough of the 835 electronic remittance advice: the payment header, claim and service lines, and the adjustment codes that explain each one.
-
CARC 45: charge exceeds fee schedule or maximum allowable
What claim adjustment reason code 45 means on a remittance, why it is usually expected, and how to use it to check whether the allowed amount matches your contract.