C11.8 — Malignant neoplasm of overlapping sites of nasopharynx

Billable

Is C11.8 billable?

Yes — C11.8 is billable for FY2027. C11.8 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C11.8 may be submitted for encounters from October 1, 2026 through September 30, 2027.

C11.8 at a glance

Code	C11.8
Description	Malignant neoplasm of overlapping sites of nasopharynx
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does C11.8 group to?

C11.8 sits in MDC Pre and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical

Use additional code — inherited from C11

Report an additional code alongside C11.8 to fully describe the condition. C11.8 is sequenced first.

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)

How long has C11.8 existed?

C11.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.