Specific code 2015 ICD-9-CM Diagnosis Code 423.9
Unspecified disease of pericardium
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 423.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 423.9 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 423.9 converts approximately to:
  • 2015/16 ICD-10-CM I31.9 Disease of pericardium, unspecified
Approximate Synonyms
  • Chest pain due to pericarditis
  • Chest pain of pericarditis
  • Lyme myopericarditis
  • Myopericarditis due to lyme disease
  • Pericardial effusion
  • Pericardial effusion (fluid around heart)
  • Pericarditis
  • Pericarditis (inflammation of heart sac)
  • Pericarditis chest pain
  • 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-9-CM Volume 2 Index entries containing back-references to 423.9:
  • Cardiopericarditis (see also Pericarditis) 423.9
  • Compression
    • cardiac 423.9
  • Disease, diseased - see also Syndrome
    • pericardium 423.9
  • Dropsy, dropsical (see also Edema) 782.3
    • pericardium (see also Pericarditis) 423.9
  • Effusion
    • pericardium, pericardial (see also Pericarditis) 423.9
  • Hydropericarditis (see also Pericarditis) 423.9
  • Hydropericardium (see also Pericarditis) 423.9
  • Hydropneumopericarditis (see also Pericarditis) 423.9
  • Hydropneumopericardium (see also Pericarditis) 423.9
  • Inflammation, inflamed, inflammatory (with exudation)
    • pericardium (see also Pericarditis) 423.9
  • Mediastinopericarditis (see also Pericarditis) 423.9
    • rheumatic, chronic 393
  • Myopericarditis (see also Pericarditis) 423.9
  • Pericarditis (granular) (with decompensation) (with effusion) 423.9
    • with
      • rheumatic fever (conditions classifiable to 390)
        • active (see also Pericarditis, rheumatic) 391.0
        • inactive or quiescent 393
    • adhesive or adherent (external) (internal) 423.1
      • acute - see Pericarditis, acute
      • rheumatic (external) (internal) 393
    • bacterial (acute) (subacute) (with serous or seropurulent effusion) 420.99
    • chronic (nonrheumatic) 423.8
    • fibrinocaseous (see also Tuberculosis) 017.9 [420.0]
    • fibrinous - see Pericarditis, rheumatic
    • obliterans, obliterating 423.1
    • rheumatic (active) (acute) (with effusion) (with pneumonia) 391.0
      • with chorea (acute) (rheumatic) (Sydenham's) 392.0
      • chronic or inactive (with chorea) 393
    • serofibrinous - see Pericarditis, rheumatic
    • tuberculous (acute) (chronic) (see also Tuberculosis) 017.9 [420.0]
  • Pleuropericarditis (see also Pericarditis) 423.9
  • Pneumohemopericardium (see also Pericarditis) 423.9
  • Pneumohydropericardium (see also Pericarditis) 423.9
  • Pneumopericarditis (see also Pericarditis) 423.9
  • Scar, scarring (see also Cicatrix) 709.2
    • compression, pericardial 423.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 423.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.