C39.9 Malignant neoplasm of lower respiratory tract, part unspecified
Billable ICD-10-CM code, FY2026.
Applicable to
- Malignant neoplasm of respiratory tract NOS
Applies from C39 Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs
Excludes1 (never code together)
- intrathoracic malignant neoplasm NOS (C76.1)
- thoracic malignant neoplasm NOS (C76.1)
Use additional code
- code to identify:
- exposure to environmental tobacco smoke (Z77.22)
- exposure to tobacco smoke in the perinatal period (P96.81)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Risk adjustment (HCC)
- CMS-HCC V28: HCC 21 — Lymphoma and Other Cancers
- CMS-HCC V22: HCC 11 — Colorectal, Bladder, and Other Cancers
- RxHCC V08: HCC 22 — Prostate, Breast, Bladder, and Other Cancers and Tumors
- ESRD V24: HCC 11
MS-DRG index
Defines the logic of DRG(s) 180-182 in MDC 04.
Approximate ICD-9-CM (GEMs)
165.8 Malignant neoplasm of other sites within the respiratory system and intrathoracic organs (approximate)165.9 Malignant neoplasm of ill-defined sites within the respiratory system (approximate)
Nearby codes
C39 Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organsC39.0 Malignant neoplasm of upper respiratory tract, part unspecifiedC39.9 Malignant neoplasm of lower respiratory tract, part unspecified (this code)