Q07.02 — Arnold-Chiari syndrome with hydrocephalus
Is Q07.02 billable?
Yes — Q07.02 is billable for FY2027. Q07.02 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Q07.02 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Q07.02 at a glance
| Code | Q07.02 |
|---|---|
| Description | Arnold-Chiari syndrome with hydrocephalus |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q07.02 group to?
Q07.02 sits in MDC 01 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 091Other Disorders of Nervous System with MCCmedical
- 092Other Disorders of Nervous System with CCmedical
- 093Other Disorders of Nervous System without CC/MCCmedical
As a secondary diagnosis, Q07.02 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is Q07.02 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q07.02. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Arnold-Chiari disease, obstruction or syndrome › with › hydrocephalus (type II)
Excludes1 — never code together — inherited from Q07.0
The conditions below can never be reported together with Q07.02 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q07.02, but a patient may have both at the same time. When documentation supports it, Q07.02 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q07
The conditions below are not part of Q07.02, but a patient may have both at the same time. When documentation supports it, Q07.02 and the excluded code may both be reported.
How long has Q07.02 existed?
Q07.02 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.