R78.89

R78.89: Finding of other specified substances, not normally found in blood

Billable / specific codeICD-10-CM

R78.89 is a billable, specific ICD-10-CM code for finding of other specified substances, not normally found in blood. It is valid for submission on a claim.

Check R78.89 with the rest of the claim: free scrubber

Inclusion terms

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

Finding of abnormal level of lithium in blood

Excludes2 inherited from the categories above R78.89

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

Written on R78: Findings of drugs and other substances, not normally found in blood

mental or behavioral disorders due to psychoactive substance use (F10-F19)

Other codes that can never be billed with R78.89

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

R79.0Abnormal level of blood mineral

Risk adjustment

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

Medicare coverage

R78.89 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56686Billing and Coding: HbA1c
A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
A57189Billing and Coding: Serum Magnesium
A59186Billing and Coding: Magnesium

Alphabetic index entries that lead here

Abnormal, abnormality, abnormalities›blood level›lithium
Findings, abnormal, inconclusive, without diagnosis›in blood›lithium(abnormal level)
Findings, abnormal, inconclusive, without diagnosis›in blood›specified substance NEC

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under R78.8

R78.81Bacteremia