ICD-10-CM Code C11.1

Malignant neoplasm of posterior wall of nasopharynx

  1. ICD-10-CM Index
  2. Chapter: C00–D48
  3. Section: C00-C14
  4. Block: C11
  5. C11.1 - Malignant neoplasm of posterior wall of nasopharynx
Version 2020 Billable Code Neoplasm Malignant Primary

Valid for Submission

C11.1 is a billable code used to specify a medical diagnosis of malignant neoplasm of posterior wall of nasopharynx. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code C11.1 might also be used to specify conditions or terms like malignant tumor of adenoid, malignant tumor of posterior wall of nasopharynx, neoplasm of adenoid, primary malignant neoplasm of adenoid, primary malignant neoplasm of posterior wall of nasopharynx, primary squamous cell carcinoma of nasopharynx, etc

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: adenoid (pharynx) (tissue) or nasopharynx, nasopharyngeal wall posterior or pharynx, pharyngeal bursa or pharynx, pharyngeal tonsil or tonsil pharyngeal .

ICD-10:C11.1
Short Description:Malignant neoplasm of posterior wall of nasopharynx
Long Description:Malignant neoplasm of posterior wall of nasopharynx

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code C11.1:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Malignant neoplasm of adenoid
  • Malignant neoplasm of pharyngeal tonsil

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Malignant tumor of adenoid
  • Malignant tumor of posterior wall of nasopharynx
  • Neoplasm of adenoid
  • Primary malignant neoplasm of adenoid
  • Primary malignant neoplasm of posterior wall of nasopharynx
  • Primary squamous cell carcinoma of nasopharynx
  • Primary squamous cell carcinoma of pharyngeal tonsil
  • Squamous cell carcinoma of nasopharynx

Convert C11.1 to ICD-9

  • 147.1 - Mal neo post nasopharynx

Code Classification

  • Neoplasms (C00–D48)
    • Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
      • Malignant neoplasm of nasopharynx (C11)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Table of Neoplasms

The code C11.1 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
Primary		 Malignant
Secondary		 CaInSitu Benign Uncertain
Behavior		 Unspecified
Behavior
»adenoid (pharynx) (tissue)
C11.1C79.89D00.08D10.6D37.05D49.0
»nasopharynx, nasopharyngeal
  »wall
    »posterior
C11.1C79.89D00.08D10.6D37.05D49.0
»pharynx, pharyngeal
  »bursa
C11.1C79.89D00.08D10.6D37.05D49.0
»pharynx, pharyngeal
  »tonsil
C11.1C79.89D00.08D10.6D37.05D49.0
»tonsil
  »pharyngeal
C11.1C79.89D00.08D10.6D37.05D49.0

Information for Patients


Throat Cancer

Throat cancer is a type of head and neck cancer. Throat cancer has different names, depending on which part of the throat is affected. The different parts of your throat are called the oropharynx, the hypopharynx, the nasopharynx, and the larynx, or voice box.

The main risk factors for throat cancer are using tobacco heavy drinking. Certain types of throat cancer also have other risk factors. For example, having HPV is a risk factor for oropharyngeal cancer.

Symptoms of throat cancer may include

  • A sore throat that does not go away
  • A lump in the neck
  • Pain or ringing in the ears
  • Trouble swallowing
  • Ear pain

To diagnose throat cancers, doctors may do a physical exam and history, imaging tests, and a biopsy. You may also need other tests, depending on the type of cancer. Treatments include surgery, radiation therapy, and chemotherapy. Treatment for some types of throat cancer may also include targeted therapy. Targeted therapy uses substances that attack cancer cells without harming normal cells.

NIH: National Cancer Institute


[Learn More]

Previous Code: C11.0

Related Codes

Next Code: C11.2