J98.5

Non-billable

Diseases of mediastinum, not elsewhere classified

J98.5 is the ICD-10-CM code for Diseases of mediastinum, not elsewhere classified. It is a non-billable category code — use a more specific child code such as J98.51 for billing.

Status
Header (non-billable)
Chapter
J00-J99
Parent
J98
Subcodes
2
Edition
FY2026

J00-J99 Diseases of the respiratory system

What this means — in plain language

MedlinePlus · NIH

What is the chest? The chest is the part of your body between your neck and your abdomen (belly). The medical term for your chest is thorax. Your chest holds many important structures for breathing, digestion, blood circulation, and other important body functions. These structures include your: Ribs and breastbone Esophagus, the tube between your mouth and stomach Trachea, your windpipe Bronchi, the tubes that carry…

Read more about Chest Injuries and Disorders at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes2 — not included here

  • abscess of mediastinum (J85.3)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Frequently asked questions

What is ICD-10 code J98.5?
J98.5 is the ICD-10-CM code for "Diseases of mediastinum, not elsewhere classified". It falls under J00-J99 Diseases of the respiratory system.
Is J98.5 a billable code?
No — J98.5 is a non-billable header code. Use a more specific child code (such as J98.51) for billing.
What are the subcodes of J98.5?
J98.5 has 2 more specific child codes, including J98.51, J98.59.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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