G52.0

Disorders of olfactory nerve

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · G52.0

Synonyms

Disorders of 1st cranial nerve

Inherited from G52Disorders of other cranial nerves

Excludes 2

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)

Inherited from G50-G59Nerve, nerve root and plexus disorders

Excludes 1

current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region neuralgia NOS (M79.2) neuritis NOS (M79.2) peripheral neuritis in pregnancy (O26.82-) radiculitis NOS (M54.1-)

Inherited from chapter 6Diseases of the nervous system

Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for G52.0

FY 2026 ›

I.C.6Chapter-specific guidanceChapter 6: Diseases of the Nervous System (G00-G99)

Subsections

Find G52.0 in the alphabetic index

10 index paths lead to this code