MCMCB Pro
J84.03

J84.03Idiopathic pulmonary hemosiderosis

Billable / specific codeICD-10-CM

J84.03 is a billable, specific ICD-10-CM code for idiopathic pulmonary hemosiderosis. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • acute idiopathic pulmonary hemorrhage in infants [AIPHI] (R04.81)

Code first

The underlying condition must be sequenced before this code.

  • underlying disease, such as:
  • disorders of iron metabolism (E83.1-)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Essential brown induration of lung

Risk adjustment

J84.03 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 280 Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders0.319 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

J84.03 is named in 8 Medicare coverage policies 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
  • A57205Billing and Coding: Oximetry Services
  • A57224Billing and Coding: Respiratory Care

How J84.03 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to J84.03.

  • Induration, induratedlungessential brown

Related codes at this level

Codes that share J84.0. If J84.03 is not quite right, the correct code is usually one of these.

Questions about J84.03

Is J84.03 a billable ICD-10-CM code?
Yes. J84.03 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does J84.03 sit in the tabular list?
Diseases of the respiratory system (J00-J99), in the block Other respiratory diseases principally affecting the interstitium (J80-J84).
What cannot be coded together with J84.03?
J84.03 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.