ICD-10 Code for Behavior

The ICD-10-CM 2027 alphabetic index lists behavior with the subterms below. More specific codes depend on the details documented, as listed in the official index (14 codes, 14 billable).

Index entries for Behavior

antisocial
- adult – Z72.811
- child or adolescent – Z72.810
disorder, disturbance – see Disorder, conduct
disruptive – see Disorder, conduct
drug seeking – Z76.5
inexplicable – R46.2
marked evasiveness – R46.5
obsessive-compulsive – R46.81
overactivity – R46.3
poor responsiveness – R46.4
self-damaging (life-style) – Z72.89
sleep-incompatible – Z72.821
slowness – R46.4
specified NEC – R46.89
strange (and inexplicable) – R46.2
suspiciousness – R46.5
type A pattern – Z73.1
undue concern or preoccupation with stressful events – R46.6
verbosity and circumstantial detail obscuring reason for contact – R46.7

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.