C13.9 Malignant neoplasm of hypopharynx, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Malignant neoplasm of hypopharyngeal wall NOS

Applies from C13 Malignant neoplasm of hypopharynx

Excludes2 (not included here)

• malignant neoplasm of pyriform sinus (C12)

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
• ESRD V24: HCC 11

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 148.9 Malignant neoplasm of hypopharynx, unspecified site

Nearby codes

• C13 Malignant neoplasm of hypopharynx
• C13.0 Malignant neoplasm of postcricoid region
• C13.1 Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect
• C13.2 Malignant neoplasm of posterior wall of hypopharynx
• C13.8 Malignant neoplasm of overlapping sites of hypopharynx
• C13.9 Malignant neoplasm of hypopharynx, unspecified (this code)