E72.4

E72.4: Disorders of ornithine metabolism

Billable / specific codeICD-10-CM

E72.4 is a billable, specific ICD-10-CM code for disorders of ornithine metabolism. It is valid for submission on a claim.

Check E72.4 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

hereditary choroidal dystrophy (H31.2-)

Inclusion terms

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

Hyperammonemia-Hyperornithinemia-Homocitrullinemia syndrome
Ornithinemia (types I, II)
Ornithine transcarbamylase deficiency

Excludes1 inherited from the categories above E72.4

A category’s note binds every code beneath it.

Written on E72: Other disorders of amino-acid metabolism

disorders of:
aromatic amino-acid metabolism (E70.-)
branched-chain amino-acid metabolism (E71.0-E71.2)
fatty-acid metabolism (E71.3)
purine and pyrimidine metabolism (E79.-)
gout (M1A.-, M10.-)

Other codes that can never be billed with E72.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

E72.2Disorders of urea cycle metabolism
E72.20Disorder of urea cycle metabolism, unspecified

Risk adjustment

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

Alphabetic index entries that lead here

Hyperornithinemia
Ornithine metabolism disorder
Ornithinemia(Type I) (Type II)
Deficiency, deficient›ornithine transcarbamylase
Disorder›ornithine metabolism
Hyperaminoaciduria›ornithine
Syndrome›hyperammonemia-hyperornithinemia-homocitrullinemia
Disorder›metabolism NOS›ornithine
Disorder›urea cycle metabolism›ornithine transcarbamylase deficiency
Disturbance›metabolism›ornithine
Disorder›metabolism NOS›amino-acid›ornithine

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E72