DRG 814

Medical DRG

Reticuloendothelial and Immunity Disorders with MCC

TypeMedicalMDC16Dx Codes137

What is MS-DRG 814?

MS-DRG 814 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 16 (MDC 16) with a Major Complication or Comorbidity (MCC). It maps to 137 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 2.1267 with a geometric mean length of stay of 4.7 days and an arithmetic mean of 6.9 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Medical DRG
Diagnosis-driven grouping
Linked Codes
137 diagnosis
Billable Dx
100%
137 of 137 shown

FY 2026 Payment Data

Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).

Relative Weight
2.1267
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
4.7 days
Used for transfer payment calculations
Arithmetic Mean LOS
6.9 days
Average length of stay
Post-Acute Transfer
No
Not subject to the transfer policy

Related MS-DRGs in This Severity Group

The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.

DRGTitleRel. WeightGMLOS
814Reticuloendothelial and Immunity Disorders with MCCThis page2.12674.7 days
815Reticuloendothelial and Immunity Disorders with CC1.01402.9 days
816Reticuloendothelial and Immunity Disorders without CC/MCC0.63202 days

Linked ICD-10-CM Diagnosis Mappings

  • A18.2

    Tuberculous peripheral lymphadenopathy

    BillableChapter 1
  • A18.85

    Tuberculosis of spleen

    BillableChapter 1
  • A28.1

    Cat-scratch disease

    BillableChapter 1
  • D15.0

    Benign neoplasm of thymus

    BillableChapter 2
  • D18.1

    Lymphangioma, any site

    BillableChapter 2
  • D36.0

    Benign neoplasm of lymph nodes

    BillableChapter 2
  • D3A.091

    Benign carcinoid tumor of the thymus

    BillableChapter 2
  • D47.2

    Monoclonal gammopathy

    BillableChapter 2
  • D47.3

    Essential (hemorrhagic) thrombocythemia

    BillableChapter 2
  • D47.4

    Osteomyelofibrosis

    BillableChapter 2
  • D68.312

    Antiphospholipid antibody with hemorrhagic disorder

    BillableChapter 3
  • D68.51

    Activated protein C resistance

    BillableChapter 3
  • D68.52

    Prothrombin gene mutation

    BillableChapter 3
  • D68.59

    Other primary thrombophilia

    BillableChapter 3
  • D68.61

    Antiphospholipid syndrome

    BillableChapter 3
  • D68.62

    Lupus anticoagulant syndrome

    BillableChapter 3
  • D68.69

    Other thrombophilia

    BillableChapter 3
  • D72.10

    Eosinophilia, unspecified

    BillableChapter 3
  • D72.110

    Idiopathic hypereosinophilic syndrome [IHES]

    BillableChapter 3
  • D72.111

    Lymphocytic Variant Hypereosinophilic Syndrome [LHES]

    BillableChapter 3
  • D72.118

    Other hypereosinophilic syndrome

    BillableChapter 3
  • D72.119

    Hypereosinophilic syndrome [HES], unspecified

    BillableChapter 3
  • D72.12

    Drug rash with eosinophilia and systemic symptoms syndrome

    BillableChapter 3
  • D72.18

    Eosinophilia in diseases classified elsewhere

    BillableChapter 3
  • D72.19

    Other eosinophilia

    BillableChapter 3
  • D72.810

    Lymphocytopenia

    BillableChapter 3
  • D72.818

    Other decreased white blood cell count

    BillableChapter 3
  • D72.819

    Decreased white blood cell count, unspecified

    BillableChapter 3
  • D72.820

    Lymphocytosis (symptomatic)

    BillableChapter 3
  • D72.821

    Monocytosis (symptomatic)

    BillableChapter 3
  • D72.822

    Plasmacytosis

    BillableChapter 3
  • D72.823

    Leukemoid reaction

    BillableChapter 3
  • D72.824

    Basophilia

    BillableChapter 3
  • D72.825

    Bandemia

    BillableChapter 3
  • D72.828

    Other elevated white blood cell count

    BillableChapter 3
  • D72.829

    Elevated white blood cell count, unspecified

    BillableChapter 3
  • D72.89

    Other specified disorders of white blood cells

    BillableChapter 3
  • D72.9

    Disorder of white blood cells, unspecified

    BillableChapter 3
  • D73.0

    Hyposplenism

    BillableChapter 3
  • D73.1

    Hypersplenism

    BillableChapter 3
  • D73.2

    Chronic congestive splenomegaly

    BillableChapter 3
  • D73.3

    Abscess of spleen

    BillableChapter 3
  • D73.4

    Cyst of spleen

    BillableChapter 3
  • D73.5

    Infarction of spleen

    BillableChapter 3
  • D73.81

    Neutropenic splenomegaly

    BillableChapter 3
  • D73.89

    Other diseases of spleen

    BillableChapter 3
  • D73.9

    Disease of spleen, unspecified

    BillableChapter 3
  • D75.0

    Familial erythrocytosis

    BillableChapter 3
  • D75.1

    Secondary polycythemia

    BillableChapter 3
  • D75.838

    Other thrombocytosis

    BillableChapter 3
  • D75.839

    Thrombocytosis, unspecified

    BillableChapter 3
  • D75.89

    Other specified diseases of blood and blood-forming organs

    BillableChapter 3
  • D75.9

    Disease of blood and blood-forming organs, unspecified

    BillableChapter 3
  • D75.A

    Glucose-6-phosphate dehydrogenase (G6PD) deficiency without anemia

    BillableChapter 3
  • D76.1

    Hemophagocytic lymphohistiocytosis

    BillableChapter 3
  • D76.2

    Hemophagocytic syndrome, infection-associated

    BillableChapter 3
  • D76.3

    Other histiocytosis syndromes

    BillableChapter 3
  • D77

    Other disorders of blood and blood-forming organs in diseases classified elsewhere

    BillableChapter 3
  • D80.0

    Hereditary hypogammaglobulinemia

    BillableChapter 3
  • D80.1

    Nonfamilial hypogammaglobulinemia

    BillableChapter 3
  • D80.2

    Selective deficiency of immunoglobulin A [IgA]

    BillableChapter 3
  • D80.3

    Selective deficiency of immunoglobulin G [IgG] subclasses

    BillableChapter 3
  • D80.4

    Selective deficiency of immunoglobulin M [IgM]

    BillableChapter 3
  • D80.5

    Immunodeficiency with increased immunoglobulin M [IgM]

    BillableChapter 3
  • D80.7

    Transient hypogammaglobulinemia of infancy

    BillableChapter 3
  • D82.2

    Immunodeficiency with short-limbed stature

    BillableChapter 3
  • D82.3

    Immunodeficiency following hereditary defective response to Epstein-Barr virus

    BillableChapter 3
  • D82.4

    Hyperimmunoglobulin E [IgE] syndrome

    BillableChapter 3
  • D82.8

    Immunodeficiency associated with other specified major defects

    BillableChapter 3
  • D82.9

    Immunodeficiency associated with major defect, unspecified

    BillableChapter 3
  • D83.0

    Common variable immunodeficiency with predominant abnormalities of B-cell numbers and function

    BillableChapter 3
  • D83.1

    Common variable immunodeficiency with predominant immunoregulatory T-cell disorders

    BillableChapter 3
  • D83.2

    Common variable immunodeficiency with autoantibodies to B- or T-cells

    BillableChapter 3
  • D83.8

    Other common variable immunodeficiencies

    BillableChapter 3
  • D83.9

    Common variable immunodeficiency, unspecified

    BillableChapter 3
  • D84.0

    Lymphocyte function antigen-1 [LFA-1] defect

    BillableChapter 3
  • D84.81

    Immunodeficiency due to conditions classified elsewhere

    BillableChapter 3
  • D84.821

    Immunodeficiency due to drugs

    BillableChapter 3
  • D84.822

    Immunodeficiency due to external causes

    BillableChapter 3
  • D84.89

    Other immunodeficiencies

    BillableChapter 3
  • D84.9

    Immunodeficiency, unspecified

    BillableChapter 3
  • D89.0

    Polyclonal hypergammaglobulinemia

    BillableChapter 3
  • D89.2

    Hypergammaglobulinemia, unspecified

    BillableChapter 3
  • D89.3

    Immune reconstitution syndrome

    BillableChapter 3
  • D89.40

    Mast cell activation, unspecified

    BillableChapter 3
  • D89.41

    Monoclonal mast cell activation syndrome

    BillableChapter 3
  • D89.42

    Idiopathic mast cell activation syndrome

    BillableChapter 3
  • D89.43

    Secondary mast cell activation

    BillableChapter 3
  • D89.44

    Hereditary alpha tryptasemia

    BillableChapter 3
  • D89.49

    Other mast cell activation disorder

    BillableChapter 3
  • D89.831

    Cytokine release syndrome, grade 1

    BillableChapter 3
  • D89.832

    Cytokine release syndrome, grade 2

    BillableChapter 3
  • D89.833

    Cytokine release syndrome, grade 3

    BillableChapter 3
  • D89.834

    Cytokine release syndrome, grade 4

    BillableChapter 3
  • D89.835

    Cytokine release syndrome, grade 5

    BillableChapter 3
  • D89.839

    Cytokine release syndrome, grade unspecified

    BillableChapter 3
  • D89.84

    IgG4-related disease

    BillableChapter 3
  • D89.89

    Other specified disorders involving the immune mechanism, not elsewhere classified

    BillableChapter 3
  • D89.9

    Disorder involving the immune mechanism, unspecified

    BillableChapter 3
  • E32.0

    Persistent hyperplasia of thymus

    BillableChapter 4
  • E32.1

    Abscess of thymus

    BillableChapter 4
  • E32.8

    Other diseases of thymus

    BillableChapter 4
  • E32.9

    Disease of thymus, unspecified

    BillableChapter 4
  • I88.1

    Chronic lymphadenitis, except mesenteric

    BillableChapter 9
  • I88.8

    Other nonspecific lymphadenitis

    BillableChapter 9
  • I88.9

    Nonspecific lymphadenitis, unspecified

    BillableChapter 9
  • I89.8

    Other specified noninfective disorders of lymphatic vessels and lymph nodes

    BillableChapter 9
  • I89.9

    Noninfective disorder of lymphatic vessels and lymph nodes, unspecified

    BillableChapter 9
  • L04.0

    Acute lymphadenitis of face, head and neck

    BillableChapter 12
  • L04.1

    Acute lymphadenitis of trunk

    BillableChapter 12
  • L04.2

    Acute lymphadenitis of upper limb

    BillableChapter 12
  • L04.3

    Acute lymphadenitis of lower limb

    BillableChapter 12
  • L04.8

    Acute lymphadenitis of other sites

    BillableChapter 12
  • L04.9

    Acute lymphadenitis, unspecified

    BillableChapter 12
  • Q89.01

    Asplenia (congenital)

    BillableChapter 17
  • Q89.09

    Congenital malformations of spleen

    BillableChapter 17
  • R16.1

    Splenomegaly, not elsewhere classified

    BillableChapter 18
  • R59.0

    Localized enlarged lymph nodes

    BillableChapter 18
  • R59.1

    Generalized enlarged lymph nodes

    BillableChapter 18
  • R59.9

    Enlarged lymph nodes, unspecified

    BillableChapter 18
  • R75

    Inconclusive laboratory evidence of human immunodeficiency virus [HIV]

    BillableChapter 18
  • R76.0

    Raised antibody titer

    BillableChapter 18
  • R76.81

    Abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritis

    BillableChapter 18
  • R76.89

    Other specified abnormal immunological findings in serum

    BillableChapter 18
  • R76.9

    Abnormal immunological finding in serum, unspecified

    BillableChapter 18
  • S36.00XA

    Unspecified injury of spleen, initial encounter

    BillableChapter 19
  • S36.020A

    Minor contusion of spleen, initial encounter

    BillableChapter 19
  • S36.021A

    Major contusion of spleen, initial encounter

    BillableChapter 19
  • S36.029A

    Unspecified contusion of spleen, initial encounter

    BillableChapter 19
  • S36.030A

    Superficial (capsular) laceration of spleen, initial encounter

    BillableChapter 19
  • S36.031A

    Moderate laceration of spleen, initial encounter

    BillableChapter 19
  • S36.032A

    Major laceration of spleen, initial encounter

    BillableChapter 19
  • S36.039A

    Unspecified laceration of spleen, initial encounter

    BillableChapter 19
  • S36.09XA

    Other injury of spleen, initial encounter

    BillableChapter 19
  • T80.82XA

    Complication of immune effector cellular therapy, initial encounter

    BillableChapter 19
  • Z94.81

    Bone marrow transplant status

    BillableChapter 21
  • Z94.84

    Stem cells transplant status

    BillableChapter 21