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R41.840

R41.840Attention and concentration deficit

Billable / specific codeICD-10-CM

R41.840 is a billable, specific ICD-10-CM code for attention and concentration deficit. 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.

  • attention-deficit hyperactivity disorders (F90.-)

Excludes1 inherited from the categories above R41.840

These are not written on R41.840, but they bind it: a note on a category applies to every code beneath it. Billing R41.840 with anything listed here is a denial.

Written on R41.84 Other specified cognitive deficit

Written on R41 Other symptoms and signs involving cognitive functions and awareness

  • dissociative [conversion] disorders (F44.-)
  • mild cognitive impairment of uncertain or unknown etiology (G31.84)

Risk adjustment

R41.840 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

R41.840 is named in 9 Medicare coverage policies 9 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52866Billing and Coding: Speech-Language Pathology
  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53064Billing and Coding: Outpatient Occupational Therapy

How R41.840 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 R41.840.

  • Deficitattention and concentration
  • Deficitconcentration

Code history

R41.840 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share R41.84. If R41.840 is not quite right, the correct code is usually one of these.

Questions about R41.840

Is R41.840 a billable ICD-10-CM code?
Yes. R41.840 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does R41.840 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 cognition, perception, emotional state and behavior (R40-R46).
What cannot be coded together with R41.840?
R41.840 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above R41.840 (R41.84, R41) and apply to it just the same.
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.