ICD-10-CM 2027 diagnosis code
R49.2Hypernasality and hyponasality
R49.2 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About R49.2
R49.2 is the ICD-10-CM diagnosis code for Hypernasality and hyponasality. It belongs to category R49 (voice and resonance disorders), block R47-R49 (symptoms and signs involving speech and voice) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.
Within R49 (voice and resonance disorders), R49.2 is specifically for Hypernasality and hyponasality. Related codes cover Dysphonia (R49.0), Aphonia (R49.1), other voice and resonance disorders (R49.8) and unspecified voice and resonance disorder (R49.9).
To report this condition, pick the subcode that matches the documentation: R49.21 (Hypernasality) and R49.22 (hyponasality).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under R49.2
Notes that apply from higher levels
Instructions written at a parent level also apply to R49.2.
› From R49 Voice and resonance disorders
- psychogenic voice and resonance disorders (F44.4)
Broader instructions also apply from Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about R49.2
Is R49.2 billable?
- No. R49.2 is a header code. Report one of its more specific subcodes instead.