Head-to-Head Architecture Comparison
When multispecialty groups evaluate documentation systems, the bottleneck is rarely prose quality. It is the distance between a finished draft and the correct EHR field. Heidi Health produces well-structured notes, but in most deployments the clinician still moves text from a separate window into the chart, section by section. Merry AI's Chrome extension runs inside the active EHR tab, maps DOM input selectors for each note subsection, and writes the reviewed draft as standard keystrokes. The EHR's schema, billing logic, and audit trail stay untouched.
| Dimension | Merry AI | Heidi Health |
|---|---|---|
| List pricing | Pro Annual $54/mo ($648/yr) | Pro ~$99/mo (~$1,188/yr) at monthly list |
| EHR write path | Chrome DOM injection into mapped fields | Copy-paste or select integrations |
| DOM injection speed | Seconds after sign-off; no clipboard step | Manual paste per section |
| Group note-splitting | Diarized, per-participant notes | Single session-level note |
| E/M vs procedure separation | Separate fields written at confirmation | Blended narrative, split manually |
| CPT G2211 capture | Conditional attestation in Assessment/Plan | Template-dependent, coder-driven |
| Attestation logging and data retention | Timestamped clinician attestation; retention defined in BAA | Account-level storage; confirm terms in BAA |
The pricing arithmetic is simple. At Heidi Health's roughly $99 monthly list price, one clinician costs about $1,188 per year, against $648 for Merry AI Pro Annual. That is a $540 difference, or 45%. Across a 12-clinician multispecialty group, the gap reaches $6,480 annually. Heidi offers a capped free tier, and annual billing discounts narrow the spread, so request written quotes from both vendors before you model it.
Field Mapping Across Heterogeneous EHRs
Multispecialty groups rarely run one EHR. Primary care may sit in eClinicalWorks v12, orthopedics in AdvancedMD, and gastroenterology in gGastro or Provation. Merry maintains per-platform selector maps for HPI, Exam, Assessment/Plan, and Procedure regions, so one extension serves all of them without marketplace fees or API onboarding. We recommend regression testing after every major EHR upgrade, because selectors can drift when vendors change layouts or iframe structure.
G2211 and Modifier 25 Documentation Logic
HCPCS G2211 is an add-on code reported with office/outpatient E/M codes 99202-99215 or home visit codes 99341-99350. CMS expects documentation showing that the practitioner is the continuing focal point for needed care, or manages a single serious or complex condition over time. A statement inferred after the fact by a coder is weaker than one written at the point of care.
Merry appends the longitudinal statement to Assessment/Plan on every qualifying visit, referencing the condition, trend data such as eGFR trajectory, and the coordination work performed. When modifier 25 accompanies a separately payable procedure, Merry suppresses the add-on and flags the encounter for coder review, unless the procedure is one of the preventive services CMS has made payable alongside G2211 since January 1, 2025.
Separating E/M From Procedure Content
In rheumatology, a knee injection billed as CPT 20610 shares the visit with disease activity management. Merry tags joint counts, serologies, and DMARD tolerance as E/M content, and consent, approach, drug, volume, and aspirate appearance as procedure content. Each narrative is written into its own EHR field, so a coder can see the modifier 25 boundary without reconstructing it. The same pattern applies to orthopedic ROM blocks and GI procedure notes.
The revenue math is modest per visit. G2211 pays roughly $16 nationally per qualifying visit, varying by locality. Twenty qualifying longitudinal visits per week across 49 working weeks yields about 980 add-ons, or approximately $15,680 per clinician-year. CMS reported a 10.3% improper payment rate for E/M services in 2024, with incorrect coding at 49.1% and insufficient documentation at 34.1% of errors. Structure at the field level addresses both.
Group Sessions and Attestation Logging
Behavioral health groups expose a different weakness. A single session-level note forces the clinician to divide ten participants' contributions by hand. Merry applies speaker diarization to separate facilitator from participants, then writes a distinct note, with its own attestation, into each patient's chart. Heidi Health generally produces one note per session, leaving the division to the clinician.
Audit Trail and Data Retention
Every attestation Merry writes carries the signing clinician, a timestamp, and the fields populated. The Clinical Logic Bridge links each billed element, from MDM level to G2211 rationale, to the encounter evidence supporting it. On retention, we want to be precise: obtain the BAA and security whitepaper from each vendor, ours included, and evaluate written terms rather than marketing language.
How to Run Your Own Evaluation
A fair comparison takes one week. Select 20 encounters per specialty, run both tools in parallel, and measure three things: time from sign-off to saved note, number of paste events, and coder agreement on modifier 25 boundaries and G2211 eligibility. Ground your assumptions in published evidence on ambient documentation at https://www.ncbi.nlm.nih.gov/pmc/.
If you would like a colleague to review the numbers with you, we will walk through your encounter mix, EHR versions, and payer rules together. Schedule a 15-Minute Workflow Audit and bring one week of de-identified volume data.
