Table of Contents

Introduction

Your orthopedic practice's A/R report says $2 million is outstanding. That single number doesn't say whether the problem is unworked denials, claims still sitting in payer processing, underpayments that never got flagged, patient balances nobody followed up on, or some mix of all four. The dollar figure is real. What it means is a separate question.

Is the A/R itself the problem — or is it where earlier problems in the revenue cycle finally become visible? For most orthopedic practices, it's the second one. A/R is the place a billing issue shows up, not necessarily where it started. An eligibility gap from the front desk, an authorization that never got confirmed, a documentation issue tied to a global surgery period — all of these can travel downstream and land in A/R weeks or months later, long after the actual breakdown occurred.

This matters a bit differently for a Massachusetts practice. Massachusetts sits in Medicare Administrative Contractor Jurisdiction K, served by National Government Services (NGS), and the state carries two distinct Medicare physician fee-schedule localities — Metropolitan Boston and the Rest of Massachusetts. None of that creates a single statewide billing rule, but it does mean payer and locality awareness are part of a well-run orthopedic billing operation here, not an afterthought.

Not All A/R Is the Same

Denial A/R

A payer has made an adverse claim decision.

Delayed / Pending A/R

The claim remains unresolved; payment has not arrived.

Underpayment / Variance A/R

Payment may be less than expected based on applicable terms.

A/R is not one thing — denials, delays, and underpayments each call for a different kind of follow-up.

What Does A/R Actually Tell an Orthopedic Practice?

In short: A/R is money owed to the practice that hasn't yet been collected — but the total dollar figure alone doesn't explain why it's still outstanding, and that explanation is what actually drives the next action.

A single A/R balance can be made up of several very different situations layered together:

  • Denied claims, where a payer has made an adverse decision
  • Delayed or pending claims, still working through payer processing
  • Underpaid claims, where the payment may not match the expected or contracted amount
  • Patient responsibility balances, separate from payer-side issues
  • Claims that are simply unresolved because no one has followed up recently

Knowing the total is a starting point. Knowing what's actually sitting inside that total is what lets a practice act on it.

Why Orthopedic A/R Can Become Complicated

Orthopedic practices, depending on how they're structured, may bill across a wider mix of services than many other specialties — and each type carries its own billing logic:

Office evaluation and management (E/M) visits
Surgical procedures, each with an assigned global period
Injections
Imaging
Physical therapy coordination, where applicable
Durable medical equipment or orthoses, where applicable
Post-operative care tied to a specific global surgery window
Prior authorization, for certain services
Workers' compensation or motor-vehicle-related claims, where relevant
Facility versus professional claim distinctions

Not every orthopedic practice touches all of these. But the more of this mix a practice has, the more places a claim can run into friction — and the more a billing team needs to track which payer rules apply to which service.

The Orthopedic A/R Leak Map

This is an educational Sirius Solutions Global framework — not an official CMS, Medicare, AMA, or payer framework. It's a way of visualizing how a claim moves from the first patient interaction through to final resolution, and where friction along that path tends to surface later as aging A/R.

Eligibility
▼
Authorization
▼
Provider / Enrollment
▼
Documentation
▼
Coding
▼
Claim Submission
▼
Payer Adjudication
▼
Denial / Delay / Underpayment
▼
A/R
▼
Follow-Up
▼
Resolution

Each checkpoint depends on the one before it. A missed eligibility check can mean a claim goes to the wrong payer. An authorization gap can mean a clean claim still gets denied. A documentation shortfall tied to a global period can mean a legitimate post-op E/M visit doesn't get paid separately. None of these show up as “A/R problems” at the point they happen — they show up as A/R problems weeks later, once the claim has worked its way through the whole chain.

7 Reasons Orthopedic A/R Can Stay Open Too Long

These are possible contributing factors — not a diagnosis that applies to every practice or every aging claim.

A/R ProblemWhat to CheckPossible Next Action
Denials not worked quicklyHow long denied claims sit before anyone reviews themSet a defined turnaround target for denial review
Claims stuck in payer processingWhether claims are being followed up on a consistent cadenceEstablish a standard follow-up schedule by payer
Underpayments not identifiedWhether payments are reconciled against expected amountsBuild a variance-review step into payment posting
Timely-filing exposureWhether claims are submitted well inside each payer's filing windowFlag claims approaching the deadline before it's too late
Authorization issues, where applicableWhether required authorizations were confirmed before the serviceVerify authorization status as part of scheduling, not after
Provider/enrollment mismatchWhether provider enrollment records are current with each payerAudit enrollment status for any new or recently changed providers
Patient balances left unresolvedWhether patient responsibility is tracked and followed up onReview aging patient balances on the same cadence as payer A/R

Global Surgery Rules Can Affect Orthopedic A/R

In short: Medicare's global surgery package bundles routine pre- and post-operative care into the surgical payment, with 000-day, 010-day, and 090-day global periods — which means “post-op visit = automatically billable” is not a safe assumption.

The global period assigned to a procedure determines what's already included in the surgical payment and what might be separately reportable:

  • 000-day and 010-day global periods generally apply to minor procedures
  • 090-day global periods generally apply to major surgery, with a related pre-operative day included
  • Modifier 24 may apply to a documented, unrelated E/M service furnished during an active postoperative period
  • Modifier 57 may apply to the E/M visit where the decision to perform a major (090-day) surgery is made, on the day of or day before the procedure

Whether a specific post-op visit is separately billable depends on the actual circumstances — the procedure's global period, whether the service was truly unrelated, documentation quality, and the specific payer's policy. Not every postoperative visit is included in the global package, and not every E/M service furnished during a global period is automatically separately billable. Both are claim-specific determinations.

Massachusetts Medicare Billing: Why Locality and MAC Awareness Matter

Massachusetts falls under Medicare Administrative Contractor Jurisdiction K, which National Government Services (NGS) administers for Part A and Part B claims across Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, and Vermont. Massachusetts also has two distinct Medicare physician fee-schedule localities: Metropolitan Boston and the Rest of Massachusetts, which carry different geographic practice cost indices used in the fee schedule calculation.

This is relevant to Original Medicare fee-for-service billing specifically — it does not mean every Massachusetts orthopedic claim is processed by NGS, since Medicare Advantage claims route through the specific MA organization rather than through NGS, and commercial payers and Medicaid/managed Medicaid plans each follow their own administrative processes entirely separate from CMS's MAC structure. Locality also doesn't determine every reimbursement amount on its own — it's one input among several in the fee schedule calculation for Medicare FFS claims specifically.

For a billing team, the practical takeaway is to know which workflow applies to which claim — Original Medicare through NGS and Jurisdiction K rules, Medicare Advantage through the specific plan's own administrative requirements, and commercial or Medicaid claims through their own payer-specific processes — rather than assuming one set of rules covers every patient.

A/R should tell you more than how much money is outstanding. It should help you understand why it's outstanding.

Sirius Solutions Global helps orthopedic practices build clearer visibility into claims, denials, underpayments, and A/R.

Contact Sirius Solutions Global

Denial vs. Delay vs. Underpayment — They're Not the Same A/R Problem

TypeWhat HappenedWhat to Investigate
DenialThe payer made an adverse claim decisionReason code, root cause, whether correction/resubmission or appeal is appropriate
DelayThe claim is unresolved and payment hasn't arrivedSubmission date, payer processing timelines, whether follow-up is overdue
UnderpaymentPayment may be less than expected based on applicable termsExpected versus allowed amount, posting accuracy, contractual methodology where available
Patient balanceResponsibility shifted to the patient after adjudicationStatement and follow-up cadence, whether the balance is being actively worked

Each of these needs a different kind of follow-up. Treating every aging claim the same way — as if it's always a “denial to appeal” or always a “payer to call” — tends to leave some categories under-addressed.

What Orthopedic Practices Should Watch in 2026

A few areas worth keeping an eye on, depending on the practice's specific services and payer mix: payer-specific policy updates, global surgery billing accuracy, denial trends by category, A/R aging by payer, underpayment patterns, authorization workflows for services that require them, and any applicable CMS/MAC guidance updates specific to Jurisdiction K.

DME / Orthosis Prior Authorization: A 2026-to-2027 Watch Item

This section applies only to practices that furnish or bill applicable DMEPOS items — it is not a universal orthopedic billing requirement. CMS has expanded its Required Prior Authorization List for certain durable medical equipment, prosthetics, orthotics, and supplies. Two upper-limb orthosis codes, L3761 (elbow orthosis) and L3916 (wrist-hand orthosis), are rolling out in phases: Phase 1 began October 28, 2026 in California, Florida, Michigan, and New York. Phase 2 begins January 26, 2027 in eight additional states, including Massachusetts, alongside Pennsylvania, Ohio, Illinois, Texas, Georgia, Arizona, and Oregon. Phase 3 extends nationwide on April 26, 2027.

For Massachusetts practices that furnish these specific orthoses, that January 26, 2027 date is a workflow item worth planning for now — confirming how prior authorization will be requested, tracked, and documented before it becomes a condition of payment. For practices that don't bill these specific codes, this is background context rather than an action item.

60-Second Orthopedic A/R Health Check

Self-Check Done
A/R is reviewed by aging bucket
A/R over 90 days is monitored
Denials are categorized by root cause
Underpayments are reviewed
Payer-level aging is visible
Global-period issues are monitored
Authorization-related issues are tracked, where applicable
Provider enrollment information is current
Patient balances are tracked
Leadership can explain why A/R changed

Educational RCM self-check — not a financial audit or payer validation tool.

Where Is Your Orthopedic A/R Actually Stuck?

This is an educational RCM diagnostic, not a financial audit or payer determination. Pick the category that sounds closest to your situation and use it as a starting point for review — not a final answer.

Stuck in Denials
Check denial reason codes and how quickly they're reviewed. Next Step: Build a defined denial-review turnaround target.
Stuck in Pending Claims
Check submission dates vs. typical payer processing time. Next Step: Set a standard follow-up cadence by payer.
Stuck in Underpayments
Check posted payments vs. expected amounts. Next Step: Add a variance check to payment posting.
Stuck in Patient Balances
Check statement cycle and follow-up consistency. Next Step: Review patient A/R on the same schedule as payer A/R.
Stuck in Global-Period Issues
Check modifier use and documentation on post-op E/M claims. Next Step: Spot-check a sample of recent global-period claims.
Stuck in Authorization
Check whether authorizations were confirmed before the service date. Next Step: Move authorization checks earlier in the scheduling workflow.
Stuck in Provider / Enrollment
Check whether enrollment records are current for all providers. Next Step: Audit enrollment status, especially for recent hires.
Unknown
Check whether current reporting can actually show root causes. Next Step: Request a breakdown of A/R by category, not just by age.

Can your current billing reports explain why your orthopedic A/R changed?

If the answer isn't a clear yes, Sirius Solutions Global can help review your current RCM workflow.

Review Your RCM Workflow

What Should Your Billing Vendor Be Able to Tell You?

  • What percentage of our A/R is over 90 days?
  • Which payers have the highest aging?
  • What are our top denial categories?
  • How much A/R is denied?
  • How much is pending?
  • Are we identifying underpayments?
  • What are our highest-value unresolved claims?
  • How are global-period issues handled?
  • What payer changes are being monitored?
  • What changed month over month?

What Should a Strong Orthopedic RCM Dashboard Include?

KPIWhy It Matters
Net collection performanceShows how much of what's owed is actually being collected
Denial rateFlags how often claims are rejected on first submission
Clean claim rateShows how many claims go out correctly the first time
Days in A/RIndicates how long it typically takes to collect
A/R over 90 daysHighlights aging balances that may need focused follow-up
UnderpaymentsFlags claims paid below the expected or contracted amount
Payer-level performanceShows whether specific payers need a different approach
Appeal outcomesTracks whether appeals are actually succeeding
Claim agingShows where claims sit in the submission-to-payment timeline
Patient A/RTracks patient-responsibility balances separately from payer-side issues

No single metric here guarantees a healthy practice on its own — these are meant to be reviewed together.

When Outsourcing Orthopedic Billing May Make Sense

Outsourcing is a business decision, not an automatic solution — a capable internal billing team may remain the right model for some practices. That said, outsourcing tends to come up as a consideration when a practice is dealing with staff capacity constraints, growing claim volume, specialized orthopedic coding needs that are hard to maintain in-house, an A/R backlog, a heavy denial workload, limited visibility into underpayments, reporting limitations, provider expansion, or staff turnover affecting billing continuity.

How Sirius Solutions Global Supports Orthopedic Billing & RCM

Sirius Solutions Global works with healthcare practices across medical billing, revenue cycle management, claims management, denial management, A/R follow-up, payment posting, eligibility verification support, billing workflow review, and RCM reporting.

We don't promise guaranteed collection improvement, a guaranteed A/R reduction, zero denials, or guaranteed reimbursement — orthopedic billing outcomes depend on documentation, payer policy, and circumstances specific to each practice and claim.

The Takeaway

A/R is not just a balance-sheet number. It's a trail of unfinished work. The practices that manage it well aren't the ones with the lowest A/R total — they're the ones that can answer what's outstanding, why it's outstanding, who owns it, what happens next, and what would prevent it from happening again. That last question is the one most worth asking before the same pattern repeats next quarter.

Want better visibility across claims, denials, underpayments, and A/R?

Sirius Solutions Global works with orthopedic practices on medical billing and revenue cycle management, including Massachusetts-specific billing workflows.

Contact Sirius Solutions Global

Frequently Asked Questions

An orthopedic billing service typically handles claim submission, denial management, A/R follow-up, payment posting, and reporting across the services an orthopedic practice provides — which can include E/M visits, surgical procedures, injections, imaging, and DME/orthoses where applicable.
Orthopedic practices may bill across a wide mix of services — office visits, surgery with global periods, injections, imaging, and sometimes DME — each with different payer rules, which can create more places for claims to encounter friction.
Possible causes include unworked denials, claims still in payer processing, unidentified underpayments, timely-filing exposure, authorization issues, provider enrollment mismatches, and unresolved patient balances — though not every claim's cause is the same.
A denial means the payer made an adverse claim decision. A delay means the claim remains unresolved and payment hasn't arrived. An underpayment means the payment received may be less than expected based on applicable terms — each requires different follow-up.
Medicare's global surgery package bundles routine pre- and post-operative care into the surgical payment for 000-day, 010-day, and 090-day global periods, meaning not every postoperative visit is automatically billable separately — whether a specific visit qualifies depends on the procedure, documentation, and payer policy.
Massachusetts falls under Medicare Administrative Contractor Jurisdiction K, administered by National Government Services, and has two Medicare physician fee-schedule localities: Metropolitan Boston and the Rest of Massachusetts. This applies to Original Medicare fee-for-service billing specifically, not to every payer a practice bills.
Useful metrics include net collection performance, denial rate, clean claim rate, days in A/R, A/R over 90 days, underpayments, payer-level performance, appeal outcomes, claim aging, and patient A/R — reviewed together rather than in isolation.
Outsourcing may be worth considering when a practice faces staff capacity constraints, growing claim volume, an A/R backlog, a heavy denial workload, or reporting limitations — though a capable internal team may remain the right fit for some practices.

Disclaimer: Orthopedic coding, billing, payer requirements, Medicare rules, MAC policies, global surgery rules, DMEPOS requirements, and reimbursement practices can vary by payer, provider, service, location, contract, and individual circumstances. This article is provided for general educational purposes and should not be treated as payer-specific coding, billing, legal, or compliance advice. Practices should verify current CMS, MAC, payer, and CPT guidance before implementing billing changes.

Sources:
CMS — A/B MAC Jurisdiction K award information; National Government Services provider resources
CMS Medicare Physician Fee Schedule — Massachusetts locality data (Metropolitan Boston / Rest of Massachusetts)
CMS — Global Surgery policy, NCCI Policy Manual, and Medicare Claims Processing Manual, Chapter 12
CMS — DMEPOS Required Prior Authorization List update, August 2026 (L3761, L3916 phased implementation)