C13.9 is the authoritative medical code for Malignant neoplasm of hypopharynx, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of hypopharynx, unspecified (ICD-10-CM C13.9), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Malignant neoplasm of hypopharynx, unspecified is a billable ICD-10-CM diagnosis code C13.9. Inclusion terms: Malignant neoplasm of hypopharyngeal wall NOS. 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.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C13.9 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Malignant neoplasm of hypopharyngeal wall NOS
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- malignant neoplasm of pyriform sinus C12
Use Additional Code
Supplementary codes the tabular list directs you to add.
- 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
Frequently Asked Questions (FAQ) & Clinical Guidance
Can C13.9 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, C13.9 and the following are not considered part of each other and may both be reported when both conditions are present: malignant neoplasm of pyriform sinus (C12).
Is an additional code needed with C13.9?
Use additional code(s) to specify: 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).
What conditions are included under C13.9?
Malignant neoplasm of hypopharynx, unspecified includes: Malignant neoplasm of hypopharyngeal wall NOS.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to C13.9 in its code family, with their registry titles.
- 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
Neoplasm Table Sites (3)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, hypopharynx, hypopharyngeal NEC — Malignant, Primary
- Neoplasm, neoplastic, laryngopharynx — Malignant, Primary
- Neoplasm, neoplastic, larynx, laryngeal NEC, extrinsic NEC, meaning hypopharynx — Malignant, Primary