2020 ICD-10-CM Diagnosis Code I31.9

Disease of pericardium, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • I31.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM I31.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of I31.9 - other international versions of ICD-10 I31.9 may differ.
Applicable To
  • Pericarditis (chronic) NOS
The following code(s) above I31.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I31.9:
  • I00-I99
    2020 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • 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.-)
    Diseases of the circulatory system
  • I31
    ICD-10-CM Diagnosis Code I31

    Other diseases of pericardium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • diseases of pericardium specified as rheumatic (I09.2)
    • postcardiotomy syndrome (I97.0)
    • traumatic injury to pericardium (S26.-)
    Other diseases of pericardium
Approximate Synonyms
  • Chest pain due to pericarditis
  • Chronic pericarditis
  • Constrictive pericarditis
  • Pericardiomyopathy
  • Pericarditis
  • Pericarditis (inflammation of heart sac)
  • Pericarditis pain (inflammation of heart sac)
Clinical Information
  • The pericardium is a membrane, or sac, that surrounds your heart. It holds the heart in place and helps it work properly. Problems with the pericardium include:
    • pericarditis, an inflammation of the sac. It can be from a virus or other infection, a heart attack, heart surgery, other medical conditions, injuries, and certain medicines.
    • pericardial effusion, the buildup of fluid in the sac
    • cardiac tamponade, a serious problem in which buildup of fluid in the sac causes problems with the function of the heart
    symptoms of pericardial problems include chest pain, rapid heartbeat and difficulty breathing. Fever is a common symptom of acute pericarditis. Treatment depends on the cause.
ICD-10-CM I31.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 314 Other circulatory system diagnoses with mcc
  • 315 Other circulatory system diagnoses with cc
  • 316 Other circulatory system diagnoses without cc/mcc

Convert I31.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to I31.9:

ICD-10-CM Codes Adjacent To I31.9
I30.1 Infective pericarditis
I30.8 Other forms of acute pericarditis
I30.9 Acute pericarditis, unspecified
I31 Other diseases of pericardium
I31.0 Chronic adhesive pericarditis
I31.1 Chronic constrictive pericarditis
I31.2 Hemopericardium, not elsewhere classified
I31.3 Pericardial effusion (noninflammatory)
I31.4 Cardiac tamponade
I31.8 Other specified diseases of pericardium
I31.9 Disease of pericardium, unspecified
I32 Pericarditis in diseases classified elsewhere
I33 Acute and subacute endocarditis
I33.0 Acute and subacute infective endocarditis
I33.9 Acute and subacute endocarditis, unspecified
I34 Nonrheumatic mitral valve disorders
I34.0 Nonrheumatic mitral (valve) insufficiency
I34.1 Nonrheumatic mitral (valve) prolapse
I34.2 Nonrheumatic mitral (valve) stenosis
I34.8 Other nonrheumatic mitral valve disorders
I34.9 Nonrheumatic mitral valve disorder, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.