J70.3

Billable

Chronic drug-induced interstitial lung disorders

HCC Category Mapping

V24HCC 112 — Fibrosis of Lung and Other Chronic Lung Disorders

0.268

ESRDHCC 112 — Fibrosis of Lung and Other Chronic Lung Disorders

0.000

What This Code Means

Long-term lung inflammation and scarring caused by medications or drugs that the patient has been taking over time.

Coding Tips

•Always identify and document the specific drug causing the condition using an additional code from the Table of Drugs and Chemicals
•This code indicates a chronic condition, so ensure documentation reflects ongoing or long-term exposure to the offending agent

Clinical Significance

Chronic drug-induced interstitial lung disease represents long-term pulmonary damage from medications, which may be irreversible even after drug discontinuation. It is significant for risk adjustment in V24 because it reflects ongoing respiratory impairment requiring continuous monitoring, potentially oxygen therapy, and pulmonary rehabilitation.

Documentation Requirements

✓Identification of the specific causative drug with duration of exposure
✓Documentation of chronic/long-standing interstitial lung changes
✓Chest imaging showing chronic interstitial disease pattern (fibrosis, honeycombing)
✓Pulmonary function tests demonstrating chronic restrictive defect
✓Drug reaction adverse effect coding using T36-T50 codes
✓Treatment plan for ongoing lung disease management
✓Assessment of reversibility after drug discontinuation

Excludes 1 — Do NOT code together

interstitial pneumonia NOS (J84.9)
lymphoid interstitial pneumonia (J84.2)

Use Additional Code

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Commonly Confused Codes

J70.2 (Acute drug-induced interstitial lung disorders) — acute onset vs. chronic J70.4 (Drug-induced interstitial lung disorders, unspecified) — use J70.3 when chronicity is established J84.112 (Idiopathic pulmonary fibrosis) — drug-induced fibrosis has an identifiable cause J84.10 (Pulmonary fibrosis, unspecified) — code the drug etiology when known

Code Hierarchy

└J70Respiratory conditions due to other external agents └J70.3Chronic drug-induced interstitial lung disorders

└J70.3Chronic drug-induced interstitial lung disorders