Q96.4 — Mosaicism, 45, X/other cell line(s) with abnormal sex chromosome
Is Q96.4 billable?
Yes — Q96.4 is billable for FY2027. Q96.4 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Q96.4 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Q96.4 at a glance
| Code | Q96.4 |
|---|---|
| Description | Mosaicism, 45, X/other cell line(s) with abnormal sex chromosome |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q96.4 group to?
Q96.4 sits in MDC 13 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 742Uterine and Adnexa Procedures for Non-Malignancy with CC/MCCsurgical
- 743Uterine and Adnexa Procedures for Non-Malignancy without CC/MCCsurgical
How is Q96.4 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q96.4. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Mosaicism, mosaic › 45,X/other cell lines NEC with abnormal sex chromosome (autosomal) (chromosomal)
Excludes1 — never code together — inherited from Q96
The conditions below can never be reported together with Q96.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Noonan syndrome (Q87.19)
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q96.4, but a patient may have both at the same time. When documentation supports it, Q96.4 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q90-Q99
The conditions below are not part of Q96.4, but a patient may have both at the same time. When documentation supports it, Q96.4 and the excluded code may both be reported.
- mitochondrial metabolic disorders (E88.4-)
How long has Q96.4 existed?
Q96.4 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.