2027 ICD-10-CM Diagnosis Code D73.0Hyposplenism
ICD-10-CM Codes›D50–D89›D70-D77›D73
- Billable — Valid for Submission
- Chronic Condition
D73.0 is a billable ICD-10-CM diagnosis code for hyposplenism. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 814 through 816. Coders also document this condition as hypoplasia of spleen. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified hematologic conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Hypoplasia of spleen
- Hyposplenism
- Splenic atrophy
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to D73.0: its own notes plus those printed at Chapter 3. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Atrophy of spleen
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- autoimmune disease (systemic) NOS (M35.9)
- certain conditions originating in the perinatal period (P00-P96)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- human immunodeficiency virus [HIV] disease (B20)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Hyposplenism D73.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Spleen Diseases
Your spleen is an organ above your stomach and under your ribs on your left side. It is about as big as your fist. The spleen is part of your lymphatic system, which fights infection and keeps your body fluids in balance. It contains white blood cells that fight germs.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert D73.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D73.0Overview
What is the ICD-10 code for hyposplenism?
The ICD-10-CM code for hyposplenism is D73.0 (sometimes written as D730). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is D73.0 (Diseases of spleen) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report hyposplenism on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does D73.0 group to?
When hyposplenism is the principal diagnosis on an inpatient stay, it groups to MS-DRG 816, 814, 815, with relative weights from 0.7378 to 2.0727 depending on complications. Higher weights mean higher Medicare reimbursement.
Can D73.0 be reported with Q89.01?
Not as a rule. The Excludes1 note on D73.0 lists "asplenia (congenital) (Q89.01)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of D73.0?
Under the General Equivalence Mappings, hyposplenism converts to ICD-9-CM 289.59 (spleen disease NEC). The mapping is approximate, so confirm the match fits the documentation.
