R49.21 ICD-10-CM Code: Hypernasality
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
R49.21Hypernasality
ICD-10-CM diagnosis code · United States clinical modification
Where R49.21 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
Symptoms and signs involving speech and voice (R47-R49)
- 3
Category R49
Voice and resonance disorders
- 4
Subcategory R49.2
Hypernasality and hyponasality
- 5
Code R49.21
Hypernasality
Notes for this code
Inclusion terms
No inclusion terms are listed for R49.21.
Code first
No “code first” instruction is listed for R49.21.
Use additional code
No “use additional code” instruction is listed for R49.21.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for R49.21.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for R49.21.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code R49.21 mean?
R49.21 is the FY 2027 U.S. ICD-10-CM code for “Hypernasality.”
Is R49.21 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, R49.21 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is R49.21 located in ICD-10-CM?
R49.21 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Symptoms and signs involving speech and voice (R47-R49) (R47–R49), under category R49, Voice and resonance disorders and subcategory R49.2, Hypernasality and hyponasality.
What coding notes are listed for R49.21?
No inclusion terms are listed for R49.21 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.