R49.21
BillableHypernasality
Hypernasality
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •abnormal findings on antenatal screening of motherO28
- •certain conditions originating in the perinatal periodP04-P96
- signs and symptoms classified in the body system chapters
- •signs and symptoms of breast,N63, N64.5
Related Codes(1)
Also Known As / Clinical Terms(38)
SNOMED CT
- Hyper-rhinolalia25728009
- Hypernasality25728009
- Hypernasality syndrome25728009
- Open nasality25728009
- Rhinolalia aperta25728009
- Hypernasality syndrome due to velopharyngeal incoordination48916002
- Hypernasality of vowels and voiced consonants59790002
- Hypernasality syndrome due to neurologic disease64465004
- Nasal resonatory disorder66034004
- Hypernasality syndrome due to velopharyngeal weakness78855007
- Hypernasal voice229645001
- Hypernasality and hyponasality274573005
- Finding of resonance of voice289189007
- Observations of resonance of voice289189007
- Nasal voice289190003
UMLS
Clinical Terms
- Hypernasality syndrome (disorder)
- Hypernasal voice
- Hyper-rhinolalia
- Observations of resonance of voice
- Nasal voice
- Hypernasality of vowels and voiced consonants
- Hypernasality syndrome due to neurologic disease
- rhinolalia aperta
- Hypernasality and hyponasality
- Hypernasality syndrome due to velopharyngeal weakness
- Finding of resonance of voice
- Hypernasality syndrome
- Nasal resonatory disorder
- Open nasality
- Hypernasality syndrome due to velopharyngeal incoordination
Frequently Asked Questions
What is the ICD-10 code for hypernasality?
The ICD-10-CM code for hypernasality is R49.21. The full clinical description is "Hypernasality". R49.21 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R49.21 mean?
ICD-10-CM code R49.21 represents “Hypernasality”. It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a billable/specific code that can be used on a claim.
Is R49.21 a billable code?
Yes, R49.21 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R49.21 in?
R49.21 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R49.21?
R49.21 has Excludes1 notes indicating codes that cannot be used together with it, including: psychogenic voice and resonance disorders (F44.4).
What SNOMED CT codes does R49.21 map to?
R49.21 maps to 10 SNOMED CT concepts: 289189007, 25728009, 229645001, 274573005, 59790002, and 5 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R49.21?
R49.21 is linked to 1 UMLS Concept Unique Identifier: C0264614. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R49.21 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like hypernasality affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of R49.21?
There is no direct ICD-11 mapping available for R49.21 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.