ICD-10-CM 2027
ICD-10 code for Aphonia
From the official ICD-10-CM alphabetic index entry “Aphonia (organic)”. Page updated September 29, 2026.
About coding Aphonia
The ICD-10-CM code for Aphonia is R49.1 (Aphonia). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R49.1.
Within R49 (voice and resonance disorders), R49.1 is specifically for Aphonia. Related codes cover Dysphonia (R49.0), Hypernasality and hyponasality (R49.2), other voice and resonance disorders (R49.8) and unspecified voice and resonance disorder (R49.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), in MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Aphonia codes (official index)
Common questions about Aphonia ICD-10 codes
What is the ICD-10 code for Aphonia?
- R49.1 — Aphonia. More specific codes apply when the documentation supports them: F44.4, F44.4.
What is the ICD-10 code for hysterical aphonia?
- F44.4 — Conversion disorder with motor symptom or deficit.
What is the ICD-10 code for psychogenic aphonia?
- F44.4 — Conversion disorder with motor symptom or deficit.
Is R49.1 billable?
- Yes. R49.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R49.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R49.1 as a principal diagnosis.
Is R49.1 a CC or MCC?
- No. R49.1 is neither a CC nor an MCC under MS-DRG v44.0.