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R29.810

R29.810Facial weakness

Billable / specific codeICD-10-CM

R29.810 is a billable, specific ICD-10-CM code for facial weakness. It is valid for submission on a claim.

Excludes1 — never code together

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

  • Bell's palsy (G51.0)
  • facial weakness following cerebrovascular disease (I69. with final characters -92)

Inclusion terms

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

  • Facial droop

Risk adjustment

R29.810 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.

Medicare coverage

R29.810 is named in 22 Medicare coverage policies 22 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
  • A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53058Billing and Coding: Home Health Physical Therapy

How R29.810 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to R29.810.

  • Droopfacial
  • Weak, weakening, weaknessfacial

Related codes at this level

Codes that share R29.81. If R29.810 is not quite right, the correct code is usually one of these.

Questions about R29.810

Is R29.810 a billable ICD-10-CM code?
Yes. R29.810 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does R29.810 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 nervous and musculoskeletal systems (R25-R29).
What cannot be coded together with R29.810?
R29.810 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.