ICD-10-CM 2027
ICD-10 code for stool abnormal
From the official ICD-10-CM alphabetic index entry “Abnormal, abnormality, abnormalities › stool (color) (contents) (mucus)”. Page updated September 29, 2026.
About coding stool abnormal
The ICD-10-CM code for stool abnormal is R19.5 (Other fecal abnormalities). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R19.5.
Within R19, choose R19.5 (Other fecal abnormalities) only when documentation doesn't support a more specific option: intra-abdominal and pelvic swelling, mass and lump (R19.0), abnormal bowel sounds (R19.1), visible peristalsis (R19.2), abdominal rigidity (R19.3), change in bowel habit (R19.4), Halitosis (R19.6), diarrhea, unspecified (R19.7) and other specified symptoms and signs involving the digestive system and abdomen (R19.8).
Don't report R19.5 together with the conditions in its Excludes1 note: melena (K92.1) and neonatal melena (P54.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific stool abnormal codes (official index)
Don't confuse with (Excludes1 for R19.5)
Common questions about stool abnormal ICD-10 codes
What is the ICD-10 code for stool abnormal?
- R19.5 — Other fecal abnormalities. More specific codes apply when the documentation supports them: K92.1, R19.5.
What is the ICD-10 code for bloody stool abnormal?
- K92.1 — Melena.
What is the ICD-10 code for guaiac positive stool abnormal?
- R19.5 — Other fecal abnormalities.
Is R19.5 billable?
- Yes. R19.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R19.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R19.5 as a principal diagnosis.
Is R19.5 a CC or MCC?
- No. R19.5 is neither a CC nor an MCC under MS-DRG v44.0.