Is R78.8 a billable ICD-10-CM code?

No. R78.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does R78.8 sit in the tabular list?

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Abnormal findings on examination of blood, without diagnosis (R70-R79).

R78.8

R78.8 — Finding of other specified substances, not normally found in blood

Non-billable headerICD-10-CM

R78.8 is a non-billable header ICD-10-CM code for finding of other specified substances, not normally found in blood. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with R78.8

These codes carry an Excludes1 note pointing at R78.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R78.8 alone.

R79.0Abnormal level of blood mineral
A41Other sepsis
A49.9Bacterial infection, unspecified

Risk adjustment

R78.8 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.

Code to one of these instead R78.8

2 child codes. Green means billable.

Related codes at this level

Codes that share R78. If R78.8 is not quite right, the correct code is usually one of these.

Questions about R78.8

Is R78.8 a billable ICD-10-CM code?: No. R78.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does R78.8 sit in the tabular list?: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Abnormal findings on examination of blood, without diagnosis (R70-R79).