B67.1

Billable

Echinococcus granulosus infection of lung

HCC Category Mapping

V24HCC 115 — Pneumococcal Pneumonia, Empyema, Lung Abscess

0.339

ESRDHCC 115 — Pneumococcal Pneumonia, Empyema, Lung Abscess

0.000

What This Code Means

A parasitic infection caused by tapeworm larvae that form cysts in the lungs, potentially causing respiratory symptoms and complications.

Coding Tips

•Note any respiratory complications such as hemoptysis or pneumothorax in the clinical documentation
•Distinguish from liver involvement (B67.0) as lung cysts may require different treatment approaches

Clinical Significance

Echinococcus granulosus infection of lung (pulmonary hydatid cyst) is caused by the larval stage of a dog tapeworm, forming slow-growing fluid-filled cysts in the lungs. Cyst rupture can cause anaphylactic shock or secondary dissemination. This diagnosis requires careful surgical planning and is most common in immigrants from the Middle East, Mediterranean, Central Asia, and South America.

Documentation Requirements

✓CT or MRI imaging showing well-defined cystic lesion(s) in the lung
✓Positive Echinococcus serology (IgG ELISA)
✓Documentation of cyst size, number, and complications (intact vs ruptured)
✓Geographic exposure history (sheep-raising regions, contact with dogs)
✓Surgical approach documented if intervention planned (PAIR procedure or surgical excision)
✓Pre-operative albendazole therapy documented

Commonly Confused Codes

B67.0 (Echinococcus granulosus infection of liver) - hepatic hydatid cysts are more common; lung cysts require B67.1 B67.39 (Echinococcus granulosus infection, other sites) - other sites outside liver and lung D38.1 (Neoplasm of uncertain behavior of trachea, bronchus and lung) - hydatid cysts can be confused with pulmonary neoplasms on imaging

Code Hierarchy

└B67Echinococcosis └B67.1Echinococcus granulosus infection of lung

└B67.1Echinococcus granulosus infection of lung