Is R20 a billable ICD-10-CM code?

No. R20 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does R20 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 the skin and subcutaneous tissue (R20-R23).

What cannot be coded together with R20?

R20 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

R20

R20 — Disturbances of skin sensation

Non-billable headerICD-10-CM

R20 is a non-billable header ICD-10-CM code for disturbances of skin sensation. 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.

dissociative anesthesia and sensory loss (F44.6)
psychogenic disturbances (F45.8)

Risk adjustment

R20 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 R20

6 child codes. Green means billable.

Questions about R20

Is R20 a billable ICD-10-CM code?: No. R20 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does R20 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 the skin and subcutaneous tissue (R20-R23).
What cannot be coded together with R20?: R20 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.