I31.31

Malignant pericardial effusion in diseases classified elsewhere

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC17

Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · I31.31
Code first

underlying neoplasm (C00-D49)

Inherited from I31.3Pericardial effusion (noninflammatory)
Excludes 1

acute pericardial effusion (I30.9)

Inherited from I31Other diseases of pericardium
Excludes 1

diseases of pericardium specified as rheumatic (I09.2) postcardiotomy syndrome (I97.0) traumatic injury to pericardium (S26.-)

Inherited from chapter 9Diseases of the circulatory system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) 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) systemic connective tissue disorders (M30-M36) transient cerebral ischemic attacks and related syndromes (G45.-)

Official Guidelines for I31.31

FY 2026 ›
I.C.9Chapter-specific guidanceChapter 9: Diseases of the Circulatory System (I00-I99)

Subsections

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