Statutory Compliance Architecture for California SB 1120
Documenting cardiology encounters under California SB 1120 begins with the statutory text. The Physicians Make Decisions Act amended Health and Safety Code §1367.01 and Insurance Code §10123.135, effective January 1, 2025. Any artificial intelligence, algorithm, or other software tool that a health plan or disability insurer uses for utilization review must base its determination on the enrollee's medical or clinical history, the individual clinical circumstances presented by the requesting provider, and other relevant clinical information in the record. The tool may not supplant provider decision-making, and it may not deny, delay, or modify care on medical necessity grounds.
Only a licensed physician or a licensed health care professional competent to evaluate the specific clinical issue may make that determination under §1367.01(e). Plans must also maintain written policies, disclose tool use, and periodically review tool performance for accuracy and reliability. For cardiology, the implication is direct: the chart is the dataset the payer algorithm reads, and the physician reviewer must be able to verify every value the algorithm relied upon.
Discrete Cardiology Parameters as Statutory Inputs
Left ventricular ejection fraction must be recorded as a numeric percentage with modality and study date, for example LVEF 30% by transthoracic echocardiogram on a specified date. Narrative phrasing such as reduced function cannot be mapped against payer thresholds for ICD or CRT implantation, LVAD evaluation, or advanced imaging. It invites an algorithmic mismatch that a reviewer must then reconstruct by hand.
NYHA functional class and GDMT titration history complete the clinical picture the statute requires plans to consider. Document class I through IV with the symptom anchor, then list each pillar with current dose and trajectory: ARNI, ACE inhibitor, or ARB; evidence-based beta-blocker; mineralocorticoid receptor antagonist; and SGLT2 inhibitor. Record intolerance, contraindications, and duration at maximally tolerated dose, because most device criteria assume at least three months of optimized therapy.
EHR Field Architecture and Clinician Attestation
Merry writes dictated cardiology values into the discrete fields of the active EHR browser window through Chrome extension DOM placement, including web-rendered Epic surfaces, without API configuration. When a cardiologist dictates NYHA class III with an ejection fraction of 30% on maximally tolerated GDMT, the engine maps each parameter to its version-controlled field selector for LVEF, NYHA class, and the heart failure therapy section. It restricts write-back to the active assessment context.
Human-in-the-Loop Attestation Controls
Every injected value remains a proposal until the cardiologist reviews, edits, and signs. Suggested fields carry a visual flag that clears only on explicit confirmation, so documentation never presents as an automated necessity determination, which §1367.01(e) reserves for licensed clinicians. Injection occurs only after a deliberate user action, such as applying the note, rather than on passive page load.
Field-level provenance logs record the timestamp, source dictation segment, target field, and confirmation status for each write. These records support HIPAA audit controls under 45 CFR §164.312(b). They also give plans the traceable reviewer documentation that emerging SB 1120 implementation guidance expects to be retained for at least three years.
Comparative Liability Across Documentation Models
The table below contrasts three documentation approaches against the statutory dimensions a California plan reviewer will examine.
| Compliance Dimension | Manual Charting | Standard Generic AI Scribes | Merry AI Compliance Architecture |
|---|---|---|---|
| LVEF capture (§1367.01(k)) | Often narrative, variable completeness | Embedded in note text | Discrete numeric field with modality and date |
| NYHA class and GDMT history | Scattered across encounters | Summarized, rarely dose-level | Structured class plus pillar-by-pillar titration |
| Physician determination (§1367.01(e)) | Clinician-authored | Unflagged AI text risks ambiguity | Flagged proposals requiring attestation |
| Provenance and audit trail | Signature only | Note-level or none | Field-level log per injected value |
| EHR write-back | Manual entry | Copy-paste or narrative push | DOM placement into discrete fields |
| Denial rebuttal readiness | Chart reconstruction required | Reviewer must parse narrative | Verifiable values mapped to payer criteria |
Generic scribes produce readable prose but leave discrete cardiology parameters buried in narrative text, where payer tools misread them and reviewers must search. Manual charting preserves authorship but rarely achieves consistent structure across a panel of heart failure patients.
Overturning Algorithmic Denials With Verifiable Evidence
When a payer algorithm flags an ICD, CRT, or advanced imaging request, SB 1120 entitles the requesting cardiologist to a determination grounded in the documented record and made by a competent licensed reviewer. Discrete, attested values in the assessment fields let that reviewer confirm LVEF, NYHA class, and GDMT duration within seconds. This converts a peer-to-peer discussion into a verification step rather than a records search.
Pair each necessity statement with its objective anchor: NT-proBNP value, echocardiographic parameters, cardiopulmonary exercise data, or hospitalization history. Link the statement to the requested service and the relevant guideline threshold, so any modification or denial must articulate why documented criteria were not met.
CMS Coding Alignment: G2211, Modifiers, and ICD-10
Longitudinal heart failure management supports HCPCS G2211 when the cardiologist furnishes ongoing care for a single, serious, or complex condition, and GDMT titration documentation substantiates that relationship. CMS limits G2211 when the office E/M carries modifier 25, with narrow preventive-service exceptions, so separate same-day procedural work must be documented distinctly. Code heart failure to full specificity, such as I50.22 for chronic systolic heart failure, using the current code set at https://www.cms.gov/medicare/coding-billing/icd-10-codes.
Practices preparing for California plan audits can review cardiology field maps, attestation flows, and provenance exports with our informatics team. Schedule a 15-Minute Workflow Audit to evaluate your documentation against the statute.
