Coding, claims, denials and AR follow-up for diabetes and endocrinology practices, thyroid and bone health clinics, and the educators and dietitians who work beside them.
An endocrinology follow-up can carry four billable services kept in four places: the office visit and its G2211 add-on in the EHR, a CGM report in a device portal, remote monitoring minutes in a staff log, and diabetes education in the educator's notes. G2211 alone adds $17.37 to a 2026 Medicare office visit. When one piece never reaches the claim, no denial arrives and nobody notices the gap. Luxen codes and follows up every claim inside your current system, with certified coders and a BAA signed before access.
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Endocrinology billing services code, submit and follow up on claims for diabetes, thyroid, bone and pituitary care: office visits, CGM and remote monitoring, thyroid ultrasound and biopsy, DXA, diabetes education and injectables. The quiet losses are add-ons. G2211 was missing on 41% of eligible follow-up visits, across 23 endocrinology practices reviewed (Luxen billing reviews).
Endocrinology billing changes with what the practice runs besides the office visit.
Service lines we bill: office and telehealth visits with G2211, CGM, RPM (99453, 99454, 99445, 99457, 99458, 99470), CCM (99490), in-office A1c (83036), thyroid ultrasound and FNA, DXA, DSMT and MNT, and injection administration (96372). Volume follows prevalence: in Kentucky, 16.2% of adults have been told they have diabetes, against 12.0% nationally (America's Health Rankings, BRFSS 2024; medical billing in Kentucky).
Most lost endocrinology revenue never shows up as a denial. It is a service documented in a device portal or an educator's note that never became a charge. Our denials and AR recovery team works the rest, oldest dollars first. Amounts are 2026 Medicare national non-facility rates.
| Scenario | Codes | What goes wrong | $ at stake per claim | Luxen audit finding |
|---|---|---|---|---|
| Diabetes or thyroid follow-up | 99214 + G2211 | Add-on left off, or dropped on a modifier 25 visit that qualifies | $17.37 per visit | G2211 was missing on 41% of eligible follow-up visits, across 23 endocrinology practices reviewed (Luxen billing reviews) |
| CGM data reviewed between visits | 95251 | Review noted in the portal but never charged, or billed twice in a month | $35.07 per patient month | Documented CGM data reviews went unbilled as 95251 in 17% of patient months (Luxen billing reviews) |
| RPM month with too few readings | 99454 (16 to 30 days), 99445 (2 to 15 days) | 99454 billed when readings fall short, leaving the month open to denial or recoupment | $52.11 per patient month | 99454 was billed with fewer than 16 days of readings on 9% of RPM claims, across 5,300 endocrinology claims (Luxen claim audit) |
| Denosumab dose after approval lapses | J0897 + 96372 | Authorization expired between doses | Full drug line plus $15.36 administration | Expired authorizations caused 27% of denosumab injection denials (Luxen claim audit) |
| Two thyroid nodules biopsied | 10005 + 10006 | Second lesion left off; the unit of service is each separate lesion | $60.12 per added lesion | Coding and modifier errors caused 21% of denials (Luxen claim audit) |
Amounts are 2026 Medicare national non-facility payments at the $33.4009 conversion factor, before locality adjustment and sequestration (CMS Physician Fee Schedule look-up). Our certified medical coders check each code against the note before the claim goes out.
| Code | Service | 2026 office rate | Billing note |
|---|---|---|---|
| 99204 | New patient visit, level 4 | $177.36 | Moderate medical decision making |
| 99205 | New patient visit, level 5 | $236.81 | High medical decision making |
| 99214 | Established patient visit, level 4 | $135.61 | Add G2211 for ongoing care |
| 99215 | Established patient visit, level 5 | $192.39 | Add G2211 for ongoing care |
| G2211 | Visit complexity add-on | $17.37 | Office and outpatient visits only |
| 95249 | CGM start, patient-owned device | $69.81 | Once while the patient owns the receiver |
| 95250 | CGM, practice-owned device | $152.64 | At least 72 hours; once a month |
| 95251 | CGM analysis, interpretation and report | $35.07 | Once a month |
| 76536 | Head and neck ultrasound | $108.55 | Needs its own report |
| 10005 | FNA with ultrasound guidance, first lesion | $132.27 | Guidance included |
| 10006 | FNA with ultrasound guidance, each added lesion | $60.12 | Unit is each separate lesion |
| 77080 | DXA, axial skeleton | $39.41 | 23-month Medicare frequency |
| 96372 | Injection, subcutaneous or intramuscular | $15.36 | Bill the drug code separately |
| 99490 | Chronic care management, first 20 minutes | $66.13 | Two or more chronic conditions |
G2211 attaches to office and outpatient visits 99202 to 99205 and 99211 to 99215 when the practice provides ongoing care for a single serious condition or a complex condition, such as insulin-treated diabetes. It is not payable when the visit carries modifier 25, except that from January 1, 2025 it is payable when the same-day service is a Part B preventive service, an immunization administration or an annual wellness visit (CMS MLN Matters MM13473). For a physician seeing 60 eligible Medicare follow-ups a week, G2211 is worth $1,042.20 a week.
95251 and RPM management 99457 can be reported in the same month, but an NCCI edit bars 99091 with 95250 or 95251 (Endocrine Society coding FAQ).
| Code | What it pays for | 2026 office rate |
|---|---|---|
| 99453 | Setup and patient education | $21.71 |
| 99454 | Device supply, 16 to 30 days of readings | $52.11 |
| 99445 | Device supply, 2 to 15 days of readings | New in 2026; never with 99454 |
| 99457 | Treatment management, first 20 minutes | $51.77 |
| 99458 | Each additional 20 minutes | $41.42 |
| 99470 | Treatment management, first 10 minutes | $26.05 |
99445 and 99470 are new for 2026 (Noridian RPM 2026 update). CMS requires an established patient relationship and consent, allows only 1 practitioner to bill remote monitoring for a patient in a 30-day period, and does not allow RPM and remote therapeutic monitoring together. RPM can run in the same month as CCM if time is not counted twice (CMS MLN901705).
The sensor and receiver are billed by the supplier to the DME MAC, not on your professional claim. Medicare covers a CGM for a patient with diabetes who is insulin-treated or has a history of problematic hypoglycemia, and the treating practitioner must hold an in-person or Medicare-approved telehealth visit within six months before ordering and every six months after (LCD L33822). A missing six-month visit note stops the supplier's claims. For contracts starting no later than January 1, 2028, Medicare will pay CGMs and insulin pumps as monthly rentals with supplies included (CMS competitive bidding update).
10005 covers the first lesion and 10006 each additional lesion, and the unit of service is the separately identifiable lesion. When a code descriptor includes radiologic guidance, no separate ultrasound guidance code is reported (NCCI Policy Manual, Chapter III). NCCI allows an evaluation and needle guidance by the same modality on the same day to be reported separately when the 2 procedures are in different anatomic regions (NCCI Policy Manual, Chapter IX). Before billing 76536 with 10005 for the same nodule, check the payer's edits and keep a complete diagnostic report separate from the biopsy note.
Medicare covers bone mass measurement when at least 23 months have passed since the last one, and more often to monitor glucocorticoid therapy lasting more than 3 months or to confirm a baseline (42 CFR 410.31). Qualifying patients include estrogen-deficient women at clinical risk, patients with vertebral abnormalities on x-ray, primary hyperparathyroidism, glucocorticoid therapy equal to 5.0 mg of prednisone or more a day for more than 3 months, and patients whose response to an FDA-approved osteoporosis drug is being monitored.
Diagnosis codes decide these claims. A repeat A1c billed with only a stable diabetes code reads as a controlled patient.
Since January 1, 2025, G2211 is payable with a modifier 25 visit when the same-day service is a Part B preventive service, an immunization administration or an annual wellness visit (CMS MLN Matters MM13473). Skipping it costs $17.37 on each of those visits. G2211 was missing on 41% of eligible follow-up visits, across 23 endocrinology practices reviewed (Luxen billing reviews).
Medicare does not consider an A1c more often than every three months reasonable and necessary for a controlled diabetic patient (NCD 190.21). More frequent testing needs a diagnosis and note showing uncontrolled diabetes or a changed regimen. In-office A1c tests repeated within 3 months without a supporting diagnosis were denied on 6% of Medicare A1c claims (Luxen claim audit).
10005 and 10006 already include ultrasound guidance, and NCCI does not allow a separate guidance code when the descriptor includes it (NCCI Policy Manual, Chapter III). The extra line is denied, and every denied line is rework on a $132.27 office biopsy claim. Coding and modifier errors caused 21% of denials (Luxen claim audit).
Medicare requires a treating practitioner visit within six months before the CGM is ordered and every six months after to document adherence (LCD L33822). Without the visit note, supplier claims stop and the patient calls your office about sensors. Eligibility and coverage errors caused 24% of denials (Luxen claim audit).
We run the revenue cycle from eligibility to zero balance inside the practice management system you already use. How full-service billing works.
Certified coders review charges against your documentation and payer rules before the claim goes out, so the denial is prevented rather than appealed. Medical coding.
Aged and denied claims are worked to resolution, then the upstream cause is fixed so the same claims stop coming back. Denials and AR recovery.
Benefits are verified and authorizations secured before the appointment, which is the cheapest place in the cycle to stop a denial. Eligibility and prior authorization.
Statements, balance questions and payment plans are handled by the same team that worked the claim. Patient billing.
Payer enrollment and re-credentialing are tracked through to approval, so a lapsed credential never quietly stops payment. Credentialing.
A HIPAA-trained front-office assistant working inside your EHR on calls, scheduling, intake and referrals, alongside the billing team. Medical virtual assistant.
We bill inside the systems your endocrinology practice already runs, with no migration.
38% had changed EHR or practice management system in the past five years, and of those, 71% said collections dipped for at least six months after the switch (Luxen Practice Manager Survey 2026). We sign the BAA first and reconcile device reports and education notes against your claims.
2 weeks
from a signed BAA to our team working your claims
About 3 weeks
to the first recovered payments on aged AR
20+ years
combined billing and coding experience
Endocrinology findings from the Luxen claim audit (61,400 claims audited, Jan 2025 to Jun 2026) and Luxen billing reviews (410 practice billing reviews, Jan 2025 to Jun 2026):
Continuous glucose monitor reviews and pump-training visits were documented, but they did not always reach billing. Luxen connected the device reports to the claim workflow, identified 194 missed services, and recovered $23,400.
Practice Administrator, endocrinology and diabetes center
Our diabetes educators and physicians documented different parts of the same care plan, making billable education services difficult to track. Luxen built one completion report and added $14,800 in monthly collections.
Operations Director, multi-provider endocrine practice
Full engagements are written up in our dental practice case study and our ambulance billing case study.
| KPI | Luxen benchmark | Endocrinology check |
|---|---|---|
| First-pass denials | Across 38 client practices, first-pass denial rate fell from 14.2% to 6.1% within 90 days of onboarding (Luxen client data) | Split CGM, RPM, lab and injectable denials |
| Days in AR | Median days in AR dropped from 54 to 33 within 120 days (Luxen client data) | Track injectable claims on their own |
| Net collection rate | Net collection rate rose from 91.4% to 97.8% over the first six months (Luxen client data) | Check G2211 and 95251 capture |
| Authorization denials | Missing or invalid prior authorization caused 17% of denials (Luxen claim audit) | Match each approval to the dose date |
| Unworked denials | 19% of denied claims were never reworked or appealed (Luxen billing reviews) | Owner and deadline for every denial |
3% to 6% of collections
Luxen's pricing generally falls between 3% and 6% of collections, depending on claim volume, specialty, payer mix, and how much of the revenue cycle your practice hands over.
Higher-volume practices usually land toward the lower end. Smaller or more complex practices land higher because there is more work per account. There is no setup fee and no exit fee, and the agreement runs month to month with 30 days notice.
A lower fee attached to weak billing is still expensive. The number that matters is what your collections do after you hire someone.
Luxen charges 3% to 6% of collections, set by visit volume, device and monitoring workload, and authorization volume. No setup or exit fee.
| Service line | Monthly collections | Luxen at 3% | Luxen at 6% |
|---|---|---|---|
| Office and telehealth visits | $78,000 | $2,340 | $4,680 |
| CGM, RPM and CCM | $18,000 | $540 | $1,080 |
| Thyroid ultrasound, FNA and DXA | $14,000 | $420 | $840 |
| DSMT, MNT and injections | $10,000 | $300 | $600 |
| Total | $120,000 | $3,600 | $7,200 |
| Cost | In-house | Luxen |
|---|---|---|
| Monthly | $9,480 (7.9% of collections) | $3,600 to $7,200 |
| Annual | $113,760 | $43,200 to $86,400 |
| When a biller leaves | Open biller roles took a median 67 days to fill (Luxen Practice Manager Survey 2026) | Coverage continues |
| Terms | Salaries, benefits, software and coding education | Month to month, 30 days notice |
Fully loaded in-house billing cost 7.9% of collections for practices under $2M, across 96 practices that shared payroll data (Luxen billing reviews). This example practice collects $1.44M a year.
| Partner type | Add-on and device capture | Authorizations | Reporting | Terms |
|---|---|---|---|---|
| In-house biller | Depends on one person | Front desk, often after a denial | Built by your team | Payroll and turnover |
| Generalist billing company | Bills what reaches the claim | Often left to the practice | Standard aging | Often annual |
| Specialty endocrinology billing company | Usually built in | Varies by vendor | Varies | Varies |
| EHR vendor RCM | Software edits | Limited outside the platform | Inside the platform | Tied to the software contract |
| Luxen | Chart, portal and schedule reconciliation | Tracked by dose and order date | Monthly denial and AR report | Month to month, 30 days notice |
Still comparing? Compare medical billing companies by state, or see what full-service medical billing includes.
A 30-minute look at your AR ageing, denial reasons and payer mix. You leave knowing what is recoverable, what we would work first and what it would cost.
We sign a business associate agreement before anyone touches your system. Your named team then works inside the practice management system and clearinghouse you already use. Nothing is migrated, and claims are being worked within two weeks of the signed BAA.
Aged and denied claims come first because that is revenue you have already earned. Most practices see the first recovered payments inside three weeks.
Once the backlog is moving, we take over the agreed part of the daily cycle: eligibility, coding review, submission, posting, denials and patient balances.
You know who owns your claims. The team works inside the practice management system and EHR you already run, with no migration.
Claims are coded by certified coders against your documentation and payer rules. Automation handles the repetitive checks so people spend their time on the claims that need judgment.
We sign a business associate agreement before accessing protected health information, and access is limited to the named people on your account.
We look at your AR ageing, volume, payer mix and denial profile first, then tell you what we believe is recoverable and what it would cost.
A billing company is a poor fit if you are not willing to share visibility into your billing, if the vendor uses a rotating pool of people who never learn your practice, or if it cannot explain why your claims are being denied. Be wary of anyone promising large collection increases before they have seen your AR ageing. The right partner makes your revenue cycle more visible, not less.
Yes. Medicare Part B and most commercial plans cover medically necessary endocrinology visits, labs, imaging and diabetes services, within limits such as an A1c no more often than every three months for controlled diabetes under NCD 190.21. Medicare also covers DSMT and MNT, and waives the deductible and coinsurance for MNT. Devices and drugs, such as a CGM under LCD L33822 or GLP-1 drugs for weight management, depend on coverage criteria and prior authorization.
Luxen charges 3% to 6% of collections, with no setup or exit fee. For a practice collecting $120,000 a month, that is $3,600 to $7,200 a month. Fully loaded in-house billing cost 7.9% of collections for practices under $2M, across 96 practices that shared payroll data (Luxen billing reviews).
About 2 weeks from signed BAA to working claims. Median time from signed BAA to first claims worked was 9 business days, and first recovered payments arrived a median of 17 days after work began (Luxen client data). We start with the oldest AR, then reconcile recent months of CGM and RPM reports against claims.
Yes. We work inside Epic, athenaOne, eClinicalWorks, NextGen and AdvancedMD, and match reviews from Dexcom Clarity, LibreView, CareLink and Glooko to charges. There is no migration, and each 95251 review in the portal is checked against the claim every month.
No. Medicare does not allow DSMT and MNT for the same patient on the same service date. Initial DSMT covers no more than 10 hours in a continuous 12 months, then 2 hours a year, billed as G0108 or G0109 per 30 minutes, while MNT covers 3 hours in the first calendar year and 2 hours each year after. Schedule the two on different days and track both caps.
Thirty minutes, no deck and no fee. We look at what is sitting past 90 days and where your denials cluster, and you leave knowing what is recoverable, what we would work first, and what it would cost.
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