Summary & Overview

HCPCS Level II S2150: Hematopoietic Stem Cell Transplantation, Comprehensive Care

HCPCS Level II code S2150 designates comprehensive hematopoietic stem cell transplantation services — including harvesting, cell processing/storage, ablative therapy, transplantation, and management of related complications with defined pre- and post-transplant global care. This code matters nationally because stem cell transplantation is a high-cost, high-complexity service with broad implications for hospital resource use, payer coverage policies, and patient access to lifesaving therapies. Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn the clinical scope captured by S2150, typical sites of service and service components, and which major payers commonly cover these services. The publication also summarizes benchmark considerations, common modifier usage, and areas where policy or coverage nuances frequently arise. Intended for health plan analysts, hospital billing teams, and policy stakeholders, the report provides concise context for coding, billing, and payer coverage discussions related to hematopoietic stem cell transplantation. Data not available in the input where specifics are absent.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareS2150HCPCS Level IIstem cell transplantationhematopoietic transplantinpatient servicescell harvestingmarrow ablative therapytransplant complicationsglobal care definition

Billing Code Overview

HCPCS Level II code S2150 covers bone marrow or blood-derived stem cell transplantation, including harvesting, transplantation, and management of related complications. The description encompasses both allogeneic and autologous sources (peripheral or umbilical), and specifies included services such as pheresis and cell preparation/storage, marrow ablative therapy, drugs and supplies, hospitalization with outpatient follow-up, medical/surgical, diagnostic, emergency, and rehabilitative services, and the number of days of pre- and post-transplant care in the global definition.

Service Type: Hematopoietic stem cell transplantation and comprehensive transplant care

Typical Site of Service: Inpatient hospital for transplantation and ablative therapy with associated outpatient follow-up for post-transplant care and complications.

Clinical & Coding Specifications

Clinical Context

A 45-year-old patient with relapsed acute myeloid leukemia is evaluated for allogeneic hematopoietic stem cell transplantation (HSCT). The clinical workflow begins with pre-transplant evaluation including HLA typing, infectious disease screening, cardiac and pulmonary clearance, and creation of a pre-transplant care plan. Conditioning (marrow ablative) chemotherapy and/or radiation is administered in an inpatient or ambulatory infusion center setting depending on intensity. Donor peripheral blood stem cell collection by pheresis or bone marrow harvest (autologous or allogeneic) is performed in an outpatient procedural suite or operating room with same-day observation. Collected cells undergo processing and storage in a cellular therapy laboratory. Transplantation occurs in an inpatient bone marrow transplant unit or specialized oncology ward; post-transplant supportive care includes transfusions, antimicrobial therapy, immunosuppression, graft-versus-host disease monitoring, and rehabilitation. Complications such as febrile neutropenia, infections, veno-occlusive disease, or graft failure may require urgent inpatient management in the same facility. Outpatient follow-up for pre- and post-transplant days included in the global period is provided in clinic and infusion centers for medication management and surveillance.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work, time, or intensity substantially exceeds usual for transplant-related procedures (document justification).
`23`	Unusual anesthesia	Use when medically necessary anesthesia is provided for a procedure usually done without general anesthesia.
`50`	Bilateral procedure	Use if bilateral marrow harvests or bilateral procedures are reported and payer requires modifier for bilateral reporting.
`52`	Reduced services	Use when transplant-related service is performed but substantially reduced or not completed as planned.
`53`	Discontinued procedure	Use when harvest or transplantation is started but terminated for patient safety before completion.
`54`	Surgical care only	Use when reporting only the surgical portion (e.g., harvest) while another provider bills pre/post care.
`55`	Postoperative management only	Use when reporting only post-transplant management separate from the operative portion.
`62`	Two surgeons	Use when two surgeons with distinct roles perform part of the operative harvest or transplant procedure.
`66`	Surgical team	Use when a surgical team approach is required for complex harvests or transplant operations.
`78`	Unplanned return to OR by same physician	Use when patient returns to operating room for complications of the transplant during the global period.
`80`	Assistant surgeon	Use when an assistant surgeon performs part of the operative harvest.
`81`	Minimum assistant surgeon	Use when minimal assistant services are provided for the harvest.
`82`	Assistant surgeon (when qualified resident unavailable)	Use when an assistant surgeon is required because a qualified resident is unavailable.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services when allowed	Use for non-physician practitioners providing covered services in the transplant continuum where allowed.

Taxonomy Code	Specialty	Notes
`207RH0000X`	Hematology/Oncology	Physicians who direct transplant evaluation, conditioning, and post-transplant care.
`2080P0207X`	Transplant Surgeon	Surgeons performing bone marrow harvests or coordination of transplant procedures.
`163W00000X`	Apheresis Technician/Service	Providers/teams performing peripheral stem cell collection by pheresis.
`363A00000X`	Blood Banking/Transfusion Medicine	Laboratories responsible for cell processing, storage, and compatibility testing.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C92.0`	Acute myelogenous leukemia not having achieved remission	Common indication for allogeneic stem cell transplantation to achieve cure or long-term remission.
`C91.0`	Acute lymphoblastic leukemia [ALL]	Indication for autologous or allogeneic HSCT in high-risk or relapsed disease.
`C83.9`	Non-Hodgkin lymphoma, unspecified	Lymphoma subtypes often treated with autologous HSCT after high-dose chemotherapy.
`D46.9`	Myelodysplastic syndrome, unspecified	Progressive marrow failure frequently treated with allogeneic transplant for curative intent.
`C81.90`	Hodgkin lymphoma, unspecified, unspecified site	Indication for autologous stem cell transplant in relapsed or refractory Hodgkin lymphoma.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`38206`	Bone marrow harvest for transplantation; allogeneic	Used when marrow is harvested from a donor for allogeneic transplant prior to `S2150` global transplant package.
`38240`	Hematopoietic progenitor cell (HPC); allogeneic transplantation per donor	Used to report collection and transfusion-related services associated with donor HPC infusion in allogeneic transplants.
`38241`	Hematopoietic progenitor cell (HPC); autologous transplantation	Used when autologous cell collection and reinfusion occur as part of the transplant process.
`36511`	Collection of blood for bone marrow or peripheral blood stem cell transplantation, with cell processing and storage (apheresis)	Used for peripheral blood stem cell collection procedures that feed into the transplant services covered by `S2150`.
`96365`	Intravenous infusion, chemotherapy, therapeutic, prophylactic, or diagnostic; initial, up to 1 hour	Used to report administration of conditioning chemotherapy agents during the pre-transplant period when billed separately.