R10.21 — Pelvic and perineal pain right side
Is R10.21 billable?
Yes — R10.21 is billable for FY2027. R10.21 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. R10.21 may be submitted for encounters from October 1, 2026 through September 30, 2027.
R10.21 at a glance
| Code | R10.21 |
|---|---|
| Description | Pelvic and perineal pain right side |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does R10.21 group to?
R10.21 sits in MDC 06 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.
- 391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCCmedical
- 392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCCmedical
How is R10.21 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R10.21. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Neuralgia, neuralgic › perineum › right (acute)
- Neuralgia, neuralgic › pubic region › right (acute)
- Pain › pelvic › right (s)
- Pain › perineal, perineum › right (s)
- Pain › abdominal › lower › pelvic or perineal › right (s)
Excludes1 — never code together — inherited from R10
The conditions below can never be reported together with R10.21 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- renal colic (N23)
Excludes1 — never code together — inherited from R10.2
The conditions below can never be reported together with R10.21 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- vulvodynia (N94.81)
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R10.21, but a patient may have both at the same time. When documentation supports it, R10.21 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R10-R19
The conditions below are not part of R10.21, but a patient may have both at the same time. When documentation supports it, R10.21 and the excluded code may both be reported.
- congenital or infantile pylorospasm (Q40.0)
- gastrointestinal hemorrhage (K92.0-K92.2)
- intestinal obstruction (K56.-)
- newborn gastrointestinal hemorrhage (P54.0-P54.3)
- newborn intestinal obstruction (P76.-)
- pylorospasm (K31.3)
- signs and symptoms involving the urinary system (R30-R39)
- symptoms referable to female genital organs (N94.-)
- symptoms referable to male genital organs (N48-N50)
Excludes2 — not included here — inherited from R10
The conditions below are not part of R10.21, but a patient may have both at the same time. When documentation supports it, R10.21 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R10.2
The conditions below are not part of R10.21, but a patient may have both at the same time. When documentation supports it, R10.21 and the excluded code may both be reported.
How long has R10.21 existed?
R10.21 first appears in FY2026.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.