S37.491A — Other injury of ovary, unilateral, initial encounter
Is S37.491A billable?
Yes — S37.491A is billable for FY2027. S37.491A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S37.491A may be submitted for encounters from October 1, 2026 through September 30, 2027.
S37.491A at a glance
| Code | S37.491A |
|---|---|
| Description | Other injury of ovary, unilateral, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in S37.491A?
In S37.491A, the 7th character A means initial encounter. The 7th character is required for S37.491A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S37.491A group to?
S37.491A 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 S37.491A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S37.491, the nearest indexed parent of S37.491A. Use them to find the family, then select the specific code.
- Injury › ovary, ovarian › specified type NEC › unilateral
- Injury › ovary, ovarian › unilateral › specified type NEC
- Perforation, perforated › pelvic › organ › ovary › unilateral (nontraumatic) (of)
Excludes1 — never code together — inherited from S37
The conditions below can never be reported together with S37.491A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- obstetric trauma to pelvic organs (O71.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S37.491A to fully describe the condition. S37.491A is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S37.491A, but a patient may have both at the same time. When documentation supports it, S37.491A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S30-S39
The conditions below are not part of S37.491A, but a patient may have both at the same time. When documentation supports it, S37.491A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S37
The conditions below are not part of S37.491A, but a patient may have both at the same time. When documentation supports it, S37.491A and the excluded code may both be reported.
Code also — inherited from S37
Two codes may be needed to describe the condition fully. Whether S37.491A is sequenced first depends on the reason for the encounter.
- any associated open wound (S31.-)
How long has S37.491A existed?
S37.491A 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.