2024 ICD-10-CM Diagnosis Code Q31.8

Other congenital malformations of larynx

ICD-10-CM Code:
Q31.8
ICD-10 Code for:
Other congenital malformations of larynx
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities
    (Q00-Q99)
    • Congenital malformations of the respiratory system
      (Q30-Q34)
      • Congenital malformations of larynx
        (Q31)

Q31.8 is a billable diagnosis code used to specify a medical diagnosis of other congenital malformations of larynx. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Approximate Synonyms

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

  • Absence of larynx
  • Absence of larynx
  • Agenesis of bronchus
  • Agenesis of larynx
  • Agenesis of larynx
  • Agenesis of larynx, trachea and bronchus
  • Agenesis of trachea
  • Anomaly of epiglottis
  • Anomaly of laryngeal and/or tracheal cartilage
  • Atresia of larynx and trachea
  • Bifid epiglottis
  • Congenital absence of bronchus
  • Congenital absence of epiglottis
  • Congenital absence of trachea
  • Congenital anomaly of cricoid cartilage
  • Congenital anomaly of epiglottis
  • Congenital anomaly of hyoid bone
  • Congenital anomaly of thyroid cartilage
  • Congenital atresia of epiglottis
  • Congenital atresia of glottis
  • Congenital atresia of larynx
  • Congenital atresia of larynx
  • Congenital atresia of trachea
  • Congenital bronchial stenosis
  • Congenital cleft larynx
  • Congenital cleft of posterior cricoid cartilage
  • Congenital cleft thyroid cartilage
  • Congenital cyst of aryepiglottic fold
  • Congenital fissure of epiglottis
  • Congenital laryngeal cyst
  • Congenital laryngotracheoesophageal cleft
  • Congenital malformation of larynx and trachea
  • Congenital malformation of larynx and trachea
  • Congenital malformation of larynx and trachea
  • Congenital malformation of trachea and bronchus
  • Congenital malformation of trachea and bronchus
  • Congenital stenosis of larynx
  • Congenital stenosis of larynx
  • Congenital stenosis of larynx, trachea and bronchus
  • Congenital stenosis of trachea
  • Congenital supraglottic stenosis
  • Congenital tracheobronchial stenosis
  • Cyst of epiglottis
  • Cyst of larynx
  • Cyst of larynx
  • Lack of ossification of hyoid bone
  • Laryngeal cleft type 0
  • Laryngeal cleft type I
  • Laryngeal cleft type II
  • Laryngeal cleft type III
  • Laryngeal cleft type IV
  • Stenosis of bronchus
  • Stenosis of trachea
  • Supraglottic cyst
  • Supraglottic stenosis
  • Vocal cord absent

Clinical Classification

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


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.
  • Absence of larynx
  • Agenesis of larynx
  • Atresia of larynx
  • Congenital cleft thyroid cartilage
  • Congenital fissure of epiglottis
  • Congenital stenosis of larynx NEC
  • Posterior cleft of cricoid cartilage

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Present on Admission (POA)

Q31.8 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Q31.8 to ICD-9-CM

  • ICD-9-CM Code: 748.3 - Laryngotrach anomaly NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Throat Disorders

Your throat is a tube that carries food to your esophagus and air to your windpipe and larynx. The technical name for your throat is the pharynx.

Throat problems are common. You've probably had a sore throat. The cause is usually a viral infection, but other causes include allergies, infection with strep bacteria or the leaking of stomach acids back up into the esophagus, called GERD.

Other problems that affect the throat include:

  • Tonsillitis - inflammation of the tonsils
  • Cancer
  • Croup - inflammation, usually in small children, which causes a barking cough
  • Laryngitis - swelling of the voice box, which can cause a hoarse voice or loss of voice

Most throat problems are minor and go away on their own. Treatments, when needed, depend on the problem.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.