Diseases of spleen (D73) ICD-10-CM
The D73 code range covers diseases of spleen with 11 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the D73 Range 11 codes · 9 billable
- D73 Diseases of spleenNon-billable
- D73.0 Hyposplenism
- D73.1 Hypersplenism
- D73.2 Chronic congestive splenomegaly
- D73.3 Abscess of spleen
- D73.4 Cyst of spleen
- D73.5 Infarction of spleen
- D73.8 Other diseases of spleenNon-billable
- D73.81 Neutropenic splenomegaly
- D73.89 Other diseases of spleen
- D73.9 Disease of spleen, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D73 range.
Hypersplenism
Condition characterized by splenomegaly, some reduction in the number of circulating blood cells in the presence of a normal or hyperactive bone marrow, and the potential for reversal by splenectomy.
Splenic Infarction
Insufficiency of arterial or venous blood supply to the spleen due to emboli, thrombi, vascular torsion, or pressure that produces a macroscopic area of necrosis. (From Stedman, 25th ed)
Splenosis
The spontaneous transplantation of splenic tissue to unusual sites after open splenic trauma, e.g., after automobile accidents, gunshot or stab wounds. The splenic pulp implants appear as red-blue nodules on the peritoneum, omentum, and mesentery, morphologically similar to multifocal pelvic endometriosis. (Segen, Dictionary of Modern Medicine, 1992)
Wandering Spleen
A congenital or acquired condition in which the SPLEEN is not in its normal anatomical position but moves about in the ABDOMEN. This is due to laxity or absence of suspensory ligaments which normally provide peritoneal attachments to keep the SPLEEN in a fixed position. Clinical symptoms include ABDOMINAL PAIN, splenic torsion and ISCHEMIA.
About the D73 Code Range
The D73 ICD-10 codes cover a range of diseases affecting the spleen, an important organ in blood filtration and immune function. These codes specify different spleen conditions like hyposplenism, hypersplenism, and splenic infarction, helping healthcare providers accurately classify spleen-related diagnoses.
The ICD-10 code for Hyposplenism (D73.0), also called hypoplasia of the spleen or splenic atrophy, identifies reduced spleen function. Hypersplenism (D73.1) refers to an overactive spleen, sometimes associated with myeloid metaplasia or thrombocytopenia due to hypersplenism. Chronic congestive splenomegaly (D73.2) codes describe an enlarged spleen caused by prolonged congestion. Abscesses (splenic abscess, D73.3) and cysts (epidermoid or peliosis spleen, D73.4) involve localized lesions within the spleen. The code D73.5 includes infarctions and various hemorrhagic or rupture conditions of the spleen. Other codes like D73.81 cover neutropenic splenomegaly while D73.89 captures diverse diseases such as lymphoid hyperplasia, splenitis, and splenic fibrosis. The unspecified category (D73.9) is used when a precise spleen disease diagnosis is unknown. This ICD-10 code section provides precise classification critical for diagnosis and treatment planning of spleen disorders.
Questions About This Page
How many billable codes are in the D73 range?
Of the 11 codes in this range, 9 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the D73 range classify?
The range classifies diseases of spleen. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
