MS-DRG 813 – Coagulation Disorders
A Medical DRG in MDC 16 (Diseases & Disorders of Blood, Blood Forming Organs, Immunologic Disorders). Inpatient cases group to DRG 813 when the ICD-10-CM principal diagnosis is one of the 39 codes listed below. Its FY 2026 relative weight is 1.5253 with a geometric mean length of stay of 3.6 days.
The grouper first assigns the case to MDC 16 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here).
Principal Diagnosis Codes 39 codes · 7 categories
D65 Disseminated intravascular coagulation [defibrination syndrome]1 code
- D65 Disseminated intravascular coagulation [defibrination syndrome]
D66 Hereditary factor VIII deficiency1 code
- D66 Hereditary factor VIII deficiency
D67 Hereditary factor IX deficiency1 code
- D67 Hereditary factor IX deficiency
D68 Other coagulation defects18 codes
- D68.00 Von Willebrand disease, unspecified
- D68.01 Von Willebrand disease, type 1
- D68.020 Von Willebrand disease, type 2A
- D68.021 Von Willebrand disease, type 2B
- D68.022 Von Willebrand disease, type 2M
- D68.023 Von Willebrand disease, type 2N
- D68.029 Von Willebrand disease, type 2, unspecified
- D68.03 Von Willebrand disease, type 3
- D68.04 Acquired von Willebrand disease
- D68.09 Other von Willebrand disease
- D68.1 Hereditary factor XI deficiency
- D68.2 Hereditary deficiency of other clotting factors
- D68.311 Acquired hemophilia
- D68.318 Other hemorrhagic disorder due to intrinsic circulating anticoagulants, antibodies, or inhibitors
- D68.32 Hemorrhagic disorder due to extrinsic circulating anticoagulants
- D68.4 Acquired coagulation factor deficiency
- D68.8 Other specified coagulation defects
- D68.9 Coagulation defect, unspecified
D69 Purpura and other hemorrhagic conditions12 codes
- D69.0 Allergic purpura
- D69.1 Qualitative platelet defects
- D69.2 Other nonthrombocytopenic purpura
- D69.3 Immune thrombocytopenic purpura
- D69.41 Evans syndrome
- D69.42 Congenital and hereditary thrombocytopenia purpura
- D69.49 Other primary thrombocytopenia
- D69.51 Posttransfusion purpura
- D69.59 Other secondary thrombocytopenia
- D69.6 Thrombocytopenia, unspecified
- D69.8 Other specified hemorrhagic conditions
- D69.9 Hemorrhagic condition, unspecified
D75 Other and unspecified diseases of blood and blood-forming organs5 codes
R23 Other skin changes1 code
- R23.3 Spontaneous ecchymoses
Procedure Codes
Frequently Asked Questions
What is MS-DRG 813?
MS-DRG 813 (Coagulation Disorders) is a medical DRG in MDC 16 (Diseases & Disorders of Blood, Blood Forming Organs, Immunologic Disorders). Its FY 2026 relative weight is 1.5253 with a geometric mean length of stay of 3.6 days.
How many diagnosis codes group to DRG 813?
39 ICD-10-CM principal diagnosis codes group to this DRG, spanning 7 three-character categories.
What is the relative weight of DRG 813?
The FY 2026 relative weight of this DRG is 1.5253, meaning reimbursement of roughly 1.53 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
