ICD-10-CM 2027
ICD-10 code for senile
From the official ICD-10-CM alphabetic index entry “Senile, senility”. Page updated September 29, 2026.
About coding senile
The ICD-10-CM code for senile is R41.81 (Age-related cognitive decline). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R41.81.
Within R41.8 (other symptoms and signs involving cognitive functions and awareness), R41.81 is specifically for age-related cognitive decline. Related codes cover Altered mental status, unspecified (R41.82), borderline intellectual functioning (R41.83), other specified cognitive deficit (R41.84), Anosognosia (R41.85) and other symptoms and signs involving cognitive functions and awareness (R41.89).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 884 (Organic Disturbances and Intellectual Disability, relative weight 1.6001), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific senile codes (official index)
- with
- acute confusional state F05 — Delirium due to known physiological condition
- mental changes NOS F03 — Unspecified dementia
- psychosis NEC
- asthenia R54 — Age-related physical debility
- cervix (atrophic) N88.8 — Other specified noninflammatory disorders of cervix uteri
- debility R54 — Age-related physical debility
- endometrium (atrophic) N85.8 — Other specified noninflammatory disorders of uterus
- fallopian tube (atrophic)
- heart (failure) R54 — Age-related physical debility
- ovary (atrophic)
- premature E34.8 — Other specified endocrine disorders
- vagina, vaginitis (atrophic) N95.2 — Postmenopausal atrophic vaginitis
- wart L82.1 — Other seborrheic keratosis
Common questions about senile ICD-10 codes
What is the ICD-10 code for senile?
- R41.81 — Age-related cognitive decline. More specific codes apply when the documentation supports them: F05, F03, R54, N88.8 and others below.
What is the ICD-10 code for asthenia senile?
- R54 — Age-related physical debility.
What is the ICD-10 code for cervix senile?
- N88.8 — Other specified noninflammatory disorders of cervix uteri.
What is the ICD-10 code for debility senile?
- R54 — Age-related physical debility.
What is the ICD-10 code for endometrium senile?
- N85.8 — Other specified noninflammatory disorders of uterus.
What is the ICD-10 code for heart senile?
- R54 — Age-related physical debility.
What is the ICD-10 code for premature senile?
- E34.8 — Other specified endocrine disorders.
Is R41.81 billable?
- Yes. R41.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R41.81 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R41.81 as a principal diagnosis.
Is R41.81 a CC or MCC?
- No. R41.81 is neither a CC nor an MCC under MS-DRG v44.0.