Your RCM and your books are speaking different languages.
Most practices run a billing system, an insurance claims pipeline, and accounting software — simultaneously, separately, with no one connecting them. Here is what gets lost in the middle, and the five numbers every practice should be tracking.
Where your revenue actually lives
RCM Software
Claims submitted, denied, pending, appealed
→
?
Who connects this to your books?
→
Your Books
P&L, balance sheet, tax return
Insurance payments, AR aging, denial write-offs — lost in the middle
Where revenue gets stuck
Denials | 65%of denied claims are never resubmitted. Appeal success rates on the same claims: 40–60%. The write-off appears in the books as a loss — not as an opportunity missed. |
AR Aging | <50%collection probability on claims past 120 days. Without monthly AR review by payer, these age silently into uncollectable territory. |
Payers | 18–74d Payment timelines vary dramatically by insurer. Payer mix directly determines cash flow timing — independent of how much revenue was generated. |
Write-offs | 2 typesContractual vs. non-contractual write-offs require different accounting treatment. Misclassifying them distorts both the P&L and the net collection rate. |
The five numbers worth tracking monthly
Days in AR
Healthy< 35 days
Watch35–55 days
At risk> 55 days
Net Collection Rate
Healthy> 96%
Watch93–96%
At risk< 93%
Clean Claim Rate
Healthy> 95%
Watch90–95%
At risk< 90%
AR over 120 days
Healthy< 10% of AR
Watch10–20%
At risk> 20%
What each number actually measures
01
Days in AR — the most useful cash flow signal
Total AR ÷ average daily charges. Every 10 days above 35 represents ~$55,000 in delayed collections on a $2M practice. Should be reviewed monthly, not annually.
02
Net collection rate — where money quietly leaves
% of allowed revenue actually collected after contractual adjustments. A 4% gap on a $2M practice = $80,000 lost annually through denials, write-offs, or patient balance gaps.
03
Clean claim rate — the rework cost most practices don't see
Each rework costs $25–$118 in administrative time and adds 30–45 days to collection. Below 90%, rework becomes a material operating cost.
04
Overhead ratio — the number that moves while you're with patients
Total costs ÷ collections. Benchmark: under 55%. Each point above on a $3M practice = $30,000 less take-home. Moves slowly. Rarely visible without monthly tracking.
05
Payer mix — the revenue variable nobody models
Which insurers pay the most, the fastest, with the fewest denials. A shift in payer mix can change cash flow timing by weeks without changing total revenue at all.
Worth knowing
The data to calculate all five of these metrics already exists in every practice — in the billing system, the RCM platform, and the accounting software. The gap is not data. It is that no one is pulling it together into a single monthly view while the physician is seeing patients. That function — financial oversight sitting between billing and tax — is distinct from both. In most independent practices, it simply does not exist.
Sources: MGMA Cost and Revenue Survey · AAFP Practice Management · Healthcare Financial Management Association