Is J84 a billable ICD-10-CM code?

No. J84 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does J84 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?

J84 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

J84

J84 — Other interstitial pulmonary diseases

Non-billable headerICD-10-CM

J84 is a non-billable header ICD-10-CM code for other interstitial pulmonary diseases. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

drug-induced interstitial lung disorders (J70.2-J70.4)
interstitial emphysema (J98.2)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

lung diseases due to external agents (J60-J70)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

, if applicable, associated condition

Other codes that can never be billed with J84

These codes carry an Excludes1 note pointing at J84. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading J84 alone.

C96.0Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis
E88.89Other specified metabolic disorders
J18Pneumonia, unspecified organism
J69.1Pneumonitis due to inhalation of oils and essences
J70.2Acute drug-induced interstitial lung disorders
J70.3Chronic drug-induced interstitial lung disorders
J70.4Drug-induced interstitial lung disorders, unspecified
J84.11Idiopathic interstitial pneumonia

Risk adjustment

J84 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead J84

5 child codes. Green means billable.

Questions about J84

Is J84 a billable ICD-10-CM code?: No. J84 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does J84 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?: J84 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.