2026 ICD-10-CM Diagnosis Code R41.840Attention and concentration deficit
ICD-10-CM Codes›R00–R99›R40-R46›R41
- Billable — Valid for Submission
- Not Chronic
R41.840 is a billable ICD-10-CM diagnosis code for attention and concentration deficit. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system signs and symptoms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Absent minded
- Cognitive deficit in attention
- Difficulty directing attention
- Distractibility
- Disturbance of attention
- Does not direct attention
- Finding related to ability to concentrate
- Finding related to ability to direct attention
- Impaired concentration
- Impairment of mental alertness
- Inattention
- Integrated attention for short spells
- Pays fleeting attention
- Poor concentration
- Reduced concentration span
- Scattered attention
- Selective inattention
- Unable to concentrate
- Unable to direct attention
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- attention-deficit hyperactivity disorders F90
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Deficit - See Also: Deficiency;
- attention and concentration - R41.840
- concentration - R41.840
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Deficit
- attention and concentration
- Deficit
- concentration
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Mental Disorders
Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..
The full article covers:
- What are mental disorders?
- What are some types of mental disorders?
- What causes mental disorders?
- Who is at risk for mental disorders?
- How are mental disorders diagnosed?
- What are the treatments for mental disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R41.840 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R41.840Overview
Is R41.840 (Other specified cognitive deficit) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report attention and concentration deficit on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Can R41.840 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the attention and concentration deficit is established, that condition takes the principal position instead.
What is the ICD-9 equivalent of R41.840?
Under the General Equivalence Mappings, attention and concentration deficit converts to ICD-9-CM 799.51 (attn/concentrate deficit). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
