NCCI edits for HCPCS A9521
CMS lists 22 active pairs with modifier indicator 0 (no NCCI-associated modifier bypasses those edits) and 3 pairs with modifier indicator 1, where an NCCI-associated modifier may be allowed when the documentation supports it.
NCCI release: Q3 2026. Source: CMS National Correct Coding Initiative (NCCI) Edits. Complete plain-text list.
Check a paired code Copy link
Not separately payable together Copy link
Modifier indicator 0: the edit cannot be bypassed with an NCCI-associated modifier. Each row names the code that denies—CMS writes every edit as an ordered pair, and it is the Column Two code that is denied while Column One is paid.
- 78018 A9521 denies
- 78070 A9521 denies
- 78102 A9521 denies
- 78103 A9521 denies
- 78122 A9521 denies
- 78140 A9521 denies
- 78215 A9521 denies
- 78226 A9521 denies
- 78227 A9521 denies
- 78305 A9521 denies
- 78315 A9521 denies
- 78451 A9521 denies
- 78452 A9521 denies
- 78472 A9521 denies
- 78580 A9521 denies
- 78608 A9521 denies
- 78630 A9521 denies
- 78707 A9521 denies
- 78708 A9521 denies
- 78800 A9521 denies
- 78808 A9521 denies
- A9512 A9512 denies
Modifier may be allowed Copy link
Modifier indicator 1: an NCCI-associated modifier may be used when the circumstances and documentation support it. Each row names the Column Two code, which is the one denied absent an allowed modifier.
NCCI edits are not a coverage determination or a substitute for the current CMS NCCI Policy Manual. Deleted pairs are excluded from this page.