G52.0

G52.0: Disorders of olfactory nerve

Billable / specific codeICD-10-CM

G52.0 is a billable, specific ICD-10-CM code for disorders of olfactory nerve. It is valid for submission on a claim.

Check G52.0 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Disorders of 1st cranial nerve

Excludes2 inherited from the categories above G52.0

Not part of this code, but both may be coded when both are present.

Written on G52: Disorders of other cranial nerves

disorders of acoustic [8th] nerve (H93.3)
disorders of optic [2nd] nerve (H46, H47.0)
paralytic strabismus due to nerve palsy (H49.0-H49.2)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

G52.0 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A54095Billing and Coding: Nerve Conduction Studies and Electromyography
A56612Billing and Coding: CT of the Head
A56619Billing and Coding: Nerve Conduction Studies and Electromyography
A56874Billing and Coding: Stereotactic Radiation Therapy: Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiation Therapy (SBRT)

Alphabetic index entries that lead here

Neuralgia, neuralgic›nose
Neuralgia, neuralgic›olfactory
Neuritis›olfactory nerve
Atrophy, atrophic›nerve›olfactory
Compression›cranial nerve›first
Disorder›nerve›olfactory
Lesion›cranial nerve›first
Neuritis›cranial nerve›first or olfactory
Atrophy, atrophic›nerve›cranial›first(olfactory)
Disorder›nerve›cranial›first

Code history

Unchanged in every release from FY2024 to FY2027.