CPT 99510: In-Home Counseling by Psychologist or Social Worker
CPT code 99510 represents an in-home counseling visit by a licensed psychologist or licensed social worker, a service that supports access to mental health care for patients unable or unlikely to attend office-based appointments. Nationally, home-based behavioral health services play a role in addressing barriers to care for older adults, patients with mobility limitations, and those with severe mental illness. Coverage and payment for this service affect provider willingness to deliver home visits and patients’ ability to receive needed psychosocial interventions.
Key payers commonly considered in coverage and reimbursement reviews are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. This publication summarizes what CPT code 99510 denotes, the clinical context for its use in home-based mental health care, and the typical settings in which it applies.
Readers will learn the clinical intent and typical site of service for CPT code 99510, relevant payer coverage patterns (Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, Medicare), and where to look for policy or billing guidance. Data not available in the input includes specific coverage rules, fee schedules, associated taxonomies, common ICD-10 pairings, and utilization benchmarks.
Sign up for cpt 99510 policy alerts
Get alerted when payer policies referencing 99510 are released or updated.
Billing Code Overview
CPT code 99510 describes an in-home counseling visit delivered by a licensed psychologist or licensed social worker. The service is psychosocial counseling provided directly in the patient’s residence and focuses on assessment, therapeutic intervention, and support delivered in a home setting.
Service Type: In-home mental health counseling by a psychologist or social worker
Typical Site of Service: Patient's home (home visit)
Clinical & Coding Specifications
Clinical Context
A common scenario for 99510 is a licensed clinical social worker or psychologist who performs in-home counseling for an adult homebound patient with chronic Major Depressive Disorder and limited mobility. The provider schedules and documents a home visit after a primary care physician or case manager identifies worsening mood, social isolation, and difficulty accessing outpatient psychotherapy. The visit includes a structured psychosocial assessment, brief psychotherapy (problem-solving and safety planning), coordination with the primary care clinician and family caregivers, and documentation of functional status and mental health risk. The clinician documents informed consent for home services, time on site, services rendered, barriers encountered (e.g., pets, access), and any follow-up plan or referrals. Billing uses 99510 for the home counseling visit; time-based and diagnostic detail are recorded in the medical record. Coordination with payors such as Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare may require preauthorization or confirmation of benefit coverage for in-home behavioral health services depending on the plan and benefit design.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier/standard reporting | Use when no special circumstance modifier applies to the visit. |
22 | Increased procedural services | Use when the in-home counseling required substantially greater work than typical (document justification). |
25 | Significant, separately identifiable E/M service on the same day | Use if a separate evaluation and management service was provided the same day in addition to the counseling visit. |
26 | Professional component | Use when billing only the professional component of a split service that has a technical component billed separately. Rare for pure counseling but applicable if combined with services that have technical components. |
52 | Reduced services | Use when the service provided was partially reduced or not fully performed (document reason). |
53 | Discontinued procedure | Use when the home visit was initiated but discontinued due to patient or environmental factors (document circumstances). |
55 | Postoperative management only | Use if the visit is limited to postoperative behavioral health management following a procedure, when payer accepts modifier for these scenarios. |
80 | Assistant surgeon | Not typically used for counseling visits; include only if a clinical assistant with appropriate credentials is billed under local rules. |
82 | Assistant surgeon (when qualified resident unavailable) | See 80 notes; rarely applicable for behavioral health home visits. |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist service | Use when services are furnished by an allowed non-physician practitioner and payer requires this modifier to identify the practitioner type. |
AJ | Clinician provided behavioral health services under specific payer policy | Use when a payer requires a specialty modifier for behavioral health clinicians; verify payer rules. |
AH | Reserved for specific payer-defined behavioral health circumstances | Use when a payor requires this modifier per policy for home-based behavioral services. |
TG | Service provided under a primary care exception or alternative payment model | Use when applicable per payer contracting or APM rules. |
U9 | Unspecified special reporting modifier used by some plans | Use only when a payer requires this specific code for administrative tracking. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 101Y00000X | Clinical Psychologist | Most common licensed psychologist taxonomy for in-home psychotherapy and assessment. |
| 1041C0700X | Clinical Social Worker | Common for licensed clinical social workers providing home counseling and care coordination. |
| 103T00000X | Marriage and Family Therapist | Performs psychotherapy in-home for family-centered behavioral health interventions. |
| 106H00000X | Licensed Professional Counselor | Provides counseling services in the home setting for behavioral health needs. |
| 1223N0001X | Behavioral Health Counselor | Used when certified behavioral health clinicians provide counseling services in home visits. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
F32.1 | Major depressive disorder, single episode, moderate | Common indication for in-home counseling when patients have functional limitations or difficulty accessing office-based care. |
F33.1 | Major depressive disorder, recurrent, moderate | Recurrent depression frequently requires ongoing home-based psychotherapy and care coordination. |
F41.1 | Generalized anxiety disorder | Anxiety disorders are commonly managed with counseling delivered in the home for patients unable to attend clinic. |
Z73.1 | Type A behavior pattern | Psychosocial stressors and behavioral patterns that may be addressed through in-home counseling and behavioral interventions. |
Z60.0 | Social environment issues, living alone | Social isolation and environmental factors that warrant home counseling and social work intervention. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
99213 | Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes | May be used when the patient is seen in clinic or via telehealth for follow-up related to the same behavioral health issue; documents a separate E/M when performed instead of or in addition to the home visit. |
90832 | Psychotherapy, 30 minutes with patient | Used for formal psychotherapy sessions; may be billed when psychotherapy of defined duration is delivered and payer requires a psychotherapy CPT instead of or in addition to 99510. |
90834 | Psychotherapy, 45 minutes with patient | Used when a longer psychotherapy session is provided during a home visit and payer allows billing of psychotherapy CPTs. |
96127 | Brief emotional/behavioral assessment (e.g., depression inventory) | Used for brief standardized screening or instrument administration during the home visit to quantify symptoms. |
99341 | Home visit for the evaluation and management of a new patient | Applicable when a physician or advanced practice provider performs a medically necessary home E/M visit in the same episode of care separate from the counseling visit; documents medical evaluation distinct from behavioral counseling. |