10ICD Code Hub

C39

Header — not billable

Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs

The ICD-10 code for malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs is C39.

C39 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.

Clinical notes

Excludes1 (not coded here)

An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).

  • intrathoracic malignant neoplasm NOS (C76.1)
  • thoracic malignant neoplasm NOS (C76.1)

Use additional code

This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.

  • 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)

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Child codes under C39

Related codes in this category