F98.4 — Stereotyped movement disorders
Is F98.4 billable?
Yes — F98.4 is billable for FY2027. F98.4 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F98.4 may be submitted for encounters from October 1, 2026 through September 30, 2027.
F98.4 at a glance
| Code | F98.4 |
|---|---|
| Description | Stereotyped movement disorders |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does F98.4 group to?
F98.4 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 887Other Mental Disorder Diagnosesmedical
How is F98.4 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to F98.4. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Spasmus nutans
- Stereotypies NEC
- Body, bodies › rocking
- Disorder › stereotyped, habit or movement (of)
- Spasm, spastic, spasticity › nodding (s)
- Disorder › movement › stereotyped (of)
- Hair › plucking › in stereotyped movement disorder
Excludes1 — never code together
The conditions below can never be reported together with F98.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- abnormal involuntary movements (R25.-)
Excludes2 — not included here
The conditions below are not part of F98.4, but a patient may have both at the same time. When documentation supports it, F98.4 and the excluded code may both be reported.
Inclusion terms
Alternative wording in documentation that is classified to F98.4.
- Stereotype/habit disorder
Excludes2 — not included here — inherited from Chapter 5
The conditions below are not part of F98.4, but a patient may have both at the same time. When documentation supports it, F98.4 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Excludes2 — not included here — inherited from F98
The conditions below are not part of F98.4, but a patient may have both at the same time. When documentation supports it, F98.4 and the excluded code may both be reported.
How long has F98.4 existed?
F98.4 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with F98.4?
ICD-10-CM declares these codes mutually exclusive with F98.4 — exactly one of each pair can be correct for a given encounter.
Which conditions are coded to F98.4?
What other codes are in the F98 family? (7)
- F98.0Enuresis not due to a substance or known physiological condition
- F98.1Encopresis not due to a substance or known physiological condition
- F98.2Other feeding disorders of infancy and childhoodnot billable
- F98.3Pica of infancy and childhood
- F98.5Adult onset fluency disorder
- F98.8Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence
- F98.9Unspecified behavioral and emotional disorders with onset usually occurring in childhood and adolescence