Summary & Overview
HCPCS M1056: Anticoagulant Prescription for Patients with Bleeding History
HCPCS Level II code M1056 represents documentation that an anticoagulant medication was prescribed during the performance period for a patient with a history of gastrointestinal bleeding, intracranial bleeding, or a bleeding disorder when the provider records specified clinical reasons for prescribing despite bleeding risk. This code matters nationally because it captures a common, high-risk clinical decision point—balancing thrombotic risk against bleeding history—and informs quality measurement, care coordination, and medication safety oversight. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context and service type, typical sites of service, and which common modifiers are associated with claims for this code. The publication summarizes what this code denotes for clinical documentation and claims processing, outlines payers reflected in national benchmarks, and highlights where input is not available in the source material (for example, specific ICD-10 pairings and taxonomies). This overview is intended for clinicians, billing professionals, and policy analysts seeking clarity on documentation expectations and the billing label used to capture anticoagulant prescribing in patients with prior bleeding events or contraindicating conditions.
Billing Code Overview
HCPCS Level II code M1056 documents the prescription of an anticoagulant medication for a patient during the performance period when the patient has a documented history of gastrointestinal bleeding, intracranial bleeding, or a bleeding disorder, and the provider has recorded one or more specific reasons for anticoagulant use despite those bleeding risks. Permissible provider-documented reasons include allergy to aspirin or antiplatelet agents, use of non-steroidal anti-inflammatory agents, drug–drug interaction, uncontrolled hypertension > 180/110 mmHg, or gastroesophageal reflux disease.
Service type: Prescription management of anticoagulation therapy.
Typical site of service: Outpatient clinic, primary care or specialty office, and ambulatory care settings where prescriptions are issued and medication management is documented.
Data not available in the input for Associated Taxonomies, ICD-10 Diagnoses, Related Codes, and Service Line.
Clinical & Coding Specifications
Clinical Context
A 72-year-old male with non-valvular atrial fibrillation and prior ischemic stroke presents for outpatient medication management. The clinician prescribes an oral anticoagulant during the performance period but documents a history of gastrointestinal bleeding and a prior intracranial hemorrhage. The provider records a specific contraindication to antiplatelet therapy due to an allergy to aspirin and ongoing use of high-dose nonsteroidal anti-inflammatory agents for osteoarthritis. The clinical workflow includes: initial evaluation of thromboembolic and hemorrhagic risks, review of prior endoscopy and neuroimaging reports, reconciliation of current medications for drug–drug interactions, documentation of blood pressure control (noting systolic readings intermittently > 180 mm Hg), and explicit charted rationale for anticoagulant choice and exclusion of antiplatelet therapy. Typical follow-up visits include monitoring for recurrent bleeding, medication tolerance, and coordination with gastroenterology or neurology when indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when additional documentation supports substantially greater work or complexity for medication management due to bleeding history or complex counseling. |
23 |