ICD-10 Code for Weak

The default ICD-10-CM 2027 code for weak, weakening, weakness (generalized) is R53.1 – Weakness. More specific codes depend on the details documented, as listed in the official index (17 codes, 17 billable).

Main code: R53.1 – Weakness
Billable: Yes

Index entries for Weak

arches (acquired) – see also Deformity, limb, flat foot
bladder (sphincter) – R32
facial – R29.810
- following
  - cerebrovascular disease – I69.992
    - cerebral infarction – I69.392
    - intracerebral hemorrhage – I69.192
    - nontraumatic intracranial hemorrhage NEC – I69.292
    - specified disease NEC – I69.892
    - stroke – I69.392
    - subarachnoid hemorrhage – I69.092
foot (double) – see also Weak, arches
heart, cardiac – see Failure, heart
mind – F70
muscle – M62.81
myocardium – see Failure, heart
newborn – P96.89
pelvic fundus – N81.89
pubocervical tissue – N81.82
senile – R54
rectovaginal tissue – N81.83
urinary stream – R39.12
valvular – see Endocarditis

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.