S31.45XD — Open bite of vagina and vulva, subsequent encounter
Is S31.45XD billable?
Yes — S31.45XD is billable for FY2027. S31.45XD is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S31.45XD may be submitted for encounters from October 1, 2026 through September 30, 2027.
S31.45XD at a glance
| Code | S31.45XD |
|---|---|
| Description | Open bite of vagina and vulva, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in S31.45XD?
In S31.45XD, the 7th character D means subsequent encounter. The 7th character is required for S31.45XD to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S31.45XD group to?
S31.45XD sits in MDC 23 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.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
How is S31.45XD listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S31.45, the nearest indexed parent of S31.45XD. Use them to find the family, then select the specific code.
- Bite › hymen (s) (animal) (human)
- Bite › vulva (s) (animal) (human)
- Injury › vagina › bite
- Injury › vulva › bite
- Wound, open › clitoris › bite
- Wound, open › vagina › bite
- Wound, open › vulva › bite
Excludes1 — never code together
The conditions below can never be reported together with S31.45XD on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Inclusion terms
Alternative wording in documentation that is classified to S31.45XD.
- Bite of vagina and vulva NOS
Excludes1 — never code together — inherited from S31
The conditions below can never be reported together with S31.45XD on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from S31.4
The conditions below can never be reported together with S31.45XD on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from S31.45
The conditions below can never be reported together with S31.45XD on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 19
Report an additional code alongside S31.45XD to fully describe the condition. S31.45XD 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 S31.45XD, but a patient may have both at the same time. When documentation supports it, S31.45XD and the excluded code may both be reported.
Excludes2 — not included here — inherited from S30-S39
The conditions below are not part of S31.45XD, but a patient may have both at the same time. When documentation supports it, S31.45XD and the excluded code may both be reported.
Excludes2 — not included here — inherited from S31
The conditions below are not part of S31.45XD, but a patient may have both at the same time. When documentation supports it, S31.45XD and the excluded code may both be reported.
Code also — inherited from S31
Two codes may be needed to describe the condition fully. Whether S31.45XD is sequenced first depends on the reason for the encounter.
How long has S31.45XD existed?
S31.45XD 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.