ICD-10 Code for Neurosis

The default ICD-10-CM 2027 code for neurosis, neurotic is F48.9 – Nonpsychotic mental disorder, unspecified. More specific codes depend on the details documented, as listed in the official index (21 codes, 21 billable).

Main code: F48.9 – Nonpsychotic mental disorder, unspecified
Billable: Yes

Index entries for Neurosis

anankastic – F42.8
anxiety (state) – F41.1
- panic type – F41.0
asthenic – F48.8
bladder – F45.8
cardiac (reflex) – F45.8
cardiovascular – F45.8
character – F60.9
colon – F45.8
compensation – F68.10
compulsive, compulsion – F42.8
conversion – F44.9
craft – F48.8
cutaneous – F45.8
depersonalization – F48.1
depressive (reaction) (type) – F34.1
environmental – F48.8
excoriation – L98.1
fatigue – F48.8
functional – see Disorder, somatoform
gastric – F45.8
gastrointestinal – F45.8
heart – F45.8
hypochondriacal – F45.21
hysterical – F44.9
incoordination – F45.8
- larynx – F45.8
- vocal cord – F45.8
intestine – F45.8
larynx (sensory) – F45.8
- hysterical – F44.4
mixed NEC – F48.8
musculoskeletal – F45.8
obsessional – F42.8
obsessive-compulsive – F42.8
occupational – F48.8
ocular NEC – F45.8
organ – see Disorder, somatoform
pharynx – F45.8
phobic – F40.9
posttraumatic (situational) – F43.10
- acute – F43.11
- chronic – F43.12
psychasthenic (type) – F48.8
railroad – F48.8
rectum – F45.8
respiratory – F45.8
rumination – F45.8
sexual – F65.9
situational – F48.8
social – F40.10
- generalized – F40.11
specified type NEC – F48.8
state – F48.9
- with depersonalization episode – F48.1
stomach – F45.8
traumatic – F43.10
- acute – F43.11
- chronic – F43.12
vasomotor – F45.8
visceral – F45.8
war – F48.8

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.