Summary & Overview

HCPCS S0320: Nurse Telephone Calls for Disease Management, Monthly

HCPCS Level II code S0320 represents monthly telephone calls by a registered nurse to members enrolled in disease management programs for monitoring purposes. This code captures structured telephonic monitoring that supports chronic disease management, medication adherence, symptom surveillance, and care coordination outside of in‑person visits. As telehealth and remote care models expand nationally, codes like S0320 matter for documenting non‑face‑to‑face nursing services and for aligning payment and program reporting with care management workflows.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise national overview of the code's clinical role, expected service setting, and the types of programs where it is used. The publication provides benchmarks and policy context relevant to telephonic disease management, highlights common billing considerations, and summarizes programmatic use cases where nursing telephonic monitoring is central to care management.

The analysis is designed to help billing managers, program directors, and policy analysts understand how S0320 is applied in disease management workflows, what to expect in payer coverage patterns, and where to look for policy updates affecting remote nursing services. Data not available in the input.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareS0320HCPCS Level IItelephonic disease managementnurse care managementremote monitoringtelehealthcare coordinationchronic disease management

Billing Code Overview

HCPCS Level II code S0320 describes telephone calls by a registered nurse to a disease management program member for monitoring purposes; per month. The service type is nurse-led telephonic disease management and monitoring. The typical site of service is telehealth/remote monitoring delivered via telephone to the patient in their home or other non‑facility setting.

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Clinical & Coding Specifications

Clinical Context

A typical patient is a community-dwelling adult enrolled in a chronic disease management program (for example, heart failure, chronic obstructive pulmonary disease, diabetes, or hypertension). A registered nurse (RN) employed by the disease management vendor places structured monthly telephone outreach calls to the member to assess symptoms, medication adherence, self-monitoring results (e.g., home blood pressure or glucose), and need for escalation. During a single calendar month the RN documents the date/time of each call, call duration, assessment findings, any triage advice given, and referrals or provider notifications. The workflow commonly begins with an automated appointment or outreach reminder, followed by the RN call, use of standardized symptom checklists, and documentation in the care management record. When clinical concerns are identified, the RN escalates to the supervising nurse practitioner or primary care provider and documents the communication. Typical sites of service are telephonic care delivered from a disease management center, home-based remote monitoring with phone outreach, or a clinic-affiliated care coordination unit. The service is reported monthly per member for monitoring by an RN using the HCPCS Level II code S0320.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the documented telephone monitoring required substantially greater RN time and resources than typical and payer policy permits modifier `22` for non-physician services.
`23`	Unusual anesthesia	Not routinely applicable to telephonic RN monitoring; generally not used.
`52`	Reduced services	Use when the monthly monitoring service was partially performed or truncated compared with standard program requirements.
`53`	Discontinued procedure	Use if the scheduled monthly monitoring interaction was started but discontinued for patient safety reasons or patient refusal.
`54`	Surgical care only	Not applicable to RN telephone monitoring.
`55`	Postoperative management only	Not applicable to RN telephone monitoring.
`56`	Preoperative management only	Not applicable to RN telephone monitoring.
`62`	Two surgeons	Not applicable to telephonic RN care; rarely used.
`AS`	Ambulatory surgical center facility service	Not applicable; use not indicated for telephone disease management.
`CO`	Routine maintenance/service contract	Use for services provided under a contractual disease management program where payers require reporting of contractual encounters.
`CQ`	Service furnished by a registered nurse under an approved telehealth program	Use when the RN provides the telephone monitoring under a designated telehealth/disease management program and payer recognizes `CQ` for RN telehealth services.
`FX`	Split/shared service	Use only if applicable local payer rules allow split/shared attribution for telephonic RN monitoring in collaborative visits.
`FY`	Technical component	Not applicable to RN telephone monitoring.
`QK`	Medical direction of two or more technicians/qualified health professionals by a physician	Rarely applicable to RN telephone monitoring; use if a physician medically directs multiple RNs and payer accepts `QK`.
`QX`	Service performed by a qualified nonphysician under physician supervision	Use when the RN performs the telephone monitoring under required physician supervision and payer requires this modifier.
`QY`	Medical direction of one qualified nonphysician by a physician	Use when a physician provides medical direction for the RN’s monitoring activities and payer recognizes `QY`.

Taxonomy Code	Specialty	Notes
`163W00000X`	Nursing	Registered Nurse performing telephonic disease management and monitoring.
`363L00000X`	Case Management	Care manager/case management specialty for chronic disease outreach and coordination.
`163W00000X`	Telehealth Nursing	RN providing remote patient monitoring and telephonic follow-up (program-specific taxonomy variant where available).
`207L00000X`	Family Medicine	Primary care oversight and escalation recipient for abnormal findings from RN monitoring.
`207Q00000X`	Internal Medicine	Primary care or chronic disease specialist receiving escalations from the RN and providing medical direction.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
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Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99457`	Remote physiologic monitoring treatment management services, first 20 minutes of clinical staff/physician/other qualified health professional time in a calendar month requiring interactive communication with the patient/caregiver	Often performed alongside RN telephone monitoring when remote physiologic data (e.g., BP, weight, glucose) are actively managed and billed by clinical staff with interactive communication.
`98960`	Education and training for patient self-management by a qualified, nonphysician health care professional using a standardized curriculum, per 30 days, for individual patient (face-to-face or telehealth)	Can be provided in coordination with monthly RN calls when structured self-management education is delivered.
`99490`	Chronic care management services, at least 20 minutes of clinical staff time directed by a physician or other qualified health care professional, per calendar month	Complementary to `S0320` when the RN’s monitoring is part of a broader chronic care management program billed by the primary care practice.
`99439`	Chronic care management services, additional 20 minutes	Used when cumulative monthly non-face-to-face care management time exceeds base CCM minutes and applies to supervised RN time.
`99446`	Interprofessional telephone/Internet assessment and management service provided by a consultative physician, 5–10 minutes of medical consultative time	May be used if the RN escalates to a physician consultant and an interprofessional consultation is billed.