R49

Non-Billable

ChapterR00–R99

Rankcategory

Official Description

Voice and resonance disorders

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

CH18 Parent Instructions

Excludes2(Not included here)

abnormal findings on antenatal screening of mother (O28.-)
certain conditions originating in the perinatal period (P04-P96)
signs and symptoms classified in the body system chapters
signs and symptoms of breast (N63, N64.5)

Instructional Notes

Excludes1(Not coded here)

psychogenic voice and resonance disorders (F44.4)

Clinical Hierarchy

CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

R47-R49Symptoms and signs involving speech and voice (R47-R49)

R49Voice and resonance disorders

R49.0Dysphonia

R49.1Aphonia

R49.2Hypernasality and hyponasality

R49.8Other voice and resonance disorders

R49.9Unspecified voice and resonance disorder

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R49:

chapterCH18

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to R49. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

19 raw paths

Aphonia (organic)1 unique routes

Direct index entry→R49

Change (s) (in) (of)2 unique routes

voice→R49(2 variants)

specified NEC→R49

Defect, defective2 unique routes

voice→R49(2 variants)

specified NEC→R49

Disorder (of)4 unique routes

resonance→R49(2 variants)

specified NEC→R49