S31.659D — Open bite of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, subsequent encounter
Is S31.659D billable?
Yes, but S31.659D is an unspecified code. S31.659D is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S31.659D is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting S31.659D — the more specific alternatives are listed below.
More specific alternatives
- S31.650DOpen bite of abdominal wall, right upper quadrant with penetration into peritoneal cavity, subsequent encounter
- S31.651DOpen bite of abdominal wall, left upper quadrant with penetration into peritoneal cavity, subsequent encounter
- S31.652DOpen bite of abdominal wall, epigastric region with penetration into peritoneal cavity, subsequent encounter
- S31.653DOpen bite of abdominal wall, right lower quadrant with penetration into peritoneal cavity, subsequent encounter
- S31.654DOpen bite of abdominal wall, left lower quadrant with penetration into peritoneal cavity, subsequent encounter
- S31.655DOpen bite of abdominal wall, periumbilic region with penetration into peritoneal cavity, subsequent encounter
- S31.656DOpen bite of abdominal wall, right flank with penetration into peritoneal cavity, subsequent encounter
- S31.657DOpen bite of abdominal wall, left flank with penetration into peritoneal cavity, subsequent encounter
S31.659D at a glance
| Code | S31.659D |
|---|---|
| Description | Open bite of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, 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 S31.659D?
In S31.659D, the 7th character D means subsequent encounter. The 7th character is required for S31.659D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S31.659D group to?
S31.659D 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 S31.659D listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S31.659, the nearest indexed parent of S31.659D. Use them to find the family, then select the specific code.
- Bite › abdomen, abdominal › wall › with penetration into peritoneal cavity (s) (animal) (human)
Excludes1 — never code together — inherited from S31
The conditions below can never be reported together with S31.659D 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 S31.65
The conditions below can never be reported together with S31.659D 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 S31.659D to fully describe the condition. S31.659D 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 S31.659D, but a patient may have both at the same time. When documentation supports it, S31.659D and the excluded code may both be reported.
Excludes2 — not included here — inherited from S30-S39
The conditions below are not part of S31.659D, but a patient may have both at the same time. When documentation supports it, S31.659D and the excluded code may both be reported.
Excludes2 — not included here — inherited from S31
The conditions below are not part of S31.659D, but a patient may have both at the same time. When documentation supports it, S31.659D and the excluded code may both be reported.
Code also — inherited from S31
Two codes may be needed to describe the condition fully. Whether S31.659D is sequenced first depends on the reason for the encounter.
How long has S31.659D existed?
S31.659D 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.