J85.3 Abscess of mediastinum

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from J85 Abscess of lung and mediastinum

Use additional code

• code (B95-B97) to identify infectious agent.

Risk adjustment (HCC)

• CMS-HCC V28: HCC 283 — Empyema, Lung Abscess
• CMS-HCC V22: HCC 115 — Pneumococcal Pneumonia, Empyema, Lung Abscess
• ESRD V24: HCC 115

MS-DRG index

Defines the logic of DRG(s) 177-179 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 513.1 Abscess of mediastinum

Code annotations containing back-references to J85.3

Back-references to J85.3

• Type 2 Excludes: J98.5 Diseases of mediastinum, not elsewhere classified ("abscess of mediastinum (J85.3)")

Back-references to J85

• Code First: I76 Septic arterial embolism ("lung abscess (J85.-)")
• Type 1 Excludes: J86 Pyothorax ("abscess of lung (J85.-)")

Diagnosis Index entries for J85.3

• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › mediastinum

Nearby codes

• J85 Abscess of lung and mediastinum
• J85.0 Gangrene and necrosis of lung
• J85.1 Abscess of lung with pneumonia
• J85.2 Abscess of lung without pneumonia
• J85.3 Abscess of mediastinum (this code)