R43.1 — Parosmia
R43.1 is a billable, specific ICD-10-CM code for parosmia. It is valid for submission on a claim.
Risk adjustment
R43.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
R43.1 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
- A56612Billing and Coding: CT of the Head
- A57123Billing and Coding: Nerve Conduction Studies and Electromyography
- A57181Billing and Coding: Allergy Testing
How R43.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to R43.1.
- Hyperosmia
- Parosmia
- Disorder›sense of smell
- Disturbance›olfactory nerve
- Disturbance›sensation NEC›smell›parosmia
Related codes at this level
Codes that share R43. If R43.1 is not quite right, the correct code is usually one of these.
Questions about R43.1
- Is R43.1 a billable ICD-10-CM code?
- Yes. R43.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does R43.1 sit in the tabular list?
- Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46).