CO-B14 denial code
Only one visit or consultation per physician per day is covered
How to fix it
Where visits were genuinely distinct, appeal with documentation and the appropriate modifier.
How to prevent it
Combine same-day encounters into a single appropriately levelled visit where clinically accurate.
In practice
A patient is seen in the morning for a routine follow-up and returns that afternoon after a fall. Both visits are billed by the same physician and the second returns CO-B14.
Payment policy allows one evaluation and management service per physician per patient per day in most circumstances, on the view that a single day's work should be reported as a single service.
Where the encounters were genuinely separate and both medically necessary, documentation and the appropriate modifier support an appeal. Where they were continuations of the same problem, combining them into one appropriately levelled visit is the accurate answer.
What sits behind it
The rule has an important corollary that practices sometimes miss. Where two encounters on one day address the same problem, the correct approach is not to bill twice but to select a single level reflecting the combined work, which is often higher than either visit alone.
Same-specialty grouping extends the rule further than it first appears. Two physicians of the same specialty in one group are generally treated as one provider for this purpose, so a patient seen by two partners on one day can produce this denial without either knowing.
Genuinely separate encounters do occur and are appealable — an unrelated acute problem after a scheduled visit being the clearest case. The appeal needs both notes and a clear statement of what distinguished them.
Related codes
Terms used here — E/M Coding · Modifier · NCCI Edits
How we handle it — Medical Coding · Denial Management · Claims Management
Primary sources
The rules behind CO-B14, at the bodies that publish them.
- NCCI Policy Manual for Medicare Services (opens in a new tab)
Centers for Medicare & Medicaid Services — The reasoning behind the edits, chapter by chapter. Where the edit files tell you two codes conflict, this explains why — which is what an appeal has to address.
- National Correct Coding Initiative (NCCI) edits (opens in a new tab)
Centers for Medicare & Medicaid Services — The procedure-to-procedure and medically-unlikely edits behind most bundling denials. Checking these before submission prevents the denial entirely.
- Medicare Claims Processing Manual (opens in a new tab)
Centers for Medicare & Medicaid Services — The operative manual for how Medicare claims must be coded, submitted, adjusted and appealed. When a payer policy and a vendor's advice disagree, this settles it.
Looking for a different code? Search all 190 CARC and RARC codes
Questions about CO-B14
Where they address the same problem, as a single visit at a level reflecting the combined work, which is often higher than either encounter alone. Billing twice for a continuing problem misstates the day; billing once at the right level does not.
Yes, more than practices expect. Two physicians of the same specialty within one group are generally treated as a single provider for this rule, so a patient seen by two partners on one day can produce the denial without either being aware.
Where the encounters were genuinely separate — most clearly an unrelated acute problem arising after a scheduled visit. The appeal needs both notes and an explicit statement of what distinguished the second encounter from the first.
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