Is R48 a billable ICD-10-CM code?

No. R48 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does R48 sit in the tabular list?

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving speech and voice (R47-R49).

What cannot be coded together with R48?

R48 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

R48

R48 — Dyslexia and other symbolic dysfunctions, not elsewhere classified

Non-billable headerICD-10-CM

R48 is a non-billable header ICD-10-CM code for dyslexia and other symbolic dysfunctions, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

specific developmental disorders of scholastic skills (F81.-)

Other codes that can never be billed with R48

These codes carry an Excludes1 note pointing at R48. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R48 alone.

R48.1Agnosia
F80.0Phonological disorder
F81.0Specific reading disorder
F81.2Mathematics disorder

Risk adjustment

R48 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 R48

6 child codes. Green means billable.

Questions about R48

Is R48 a billable ICD-10-CM code?: No. R48 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does R48 sit in the tabular list?: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving speech and voice (R47-R49).
What cannot be coded together with R48?: R48 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.