O08.4 vs R34
O08.4 and R34 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
Renal failure following ectopic and molar pregnancy
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O00-O08
- Kidney failure (acute) following ectopic and molar pregnancy
- Oliguria following ectopic and molar pregnancy
- Renal shutdown following ectopic and molar pregnancy
- Renal tubular necrosis following ectopic and molar pregnancy
- Uremia following ectopic and molar pregnancy
- Oliguria › with, complicating or following ectopic or molar pregnancy
- Uremia, uremic › following ectopic or molar pregnancy
- Anuria › following › ectopic or molar pregnancy
- Complication › ectopic pregnancy › renal failure
- Complication › molar pregnancy NOS › renal failure
Anuria and oliguria
- Chapter 18
- Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Section
- R30-R39
- Anuria
- Ischuria
- Oliguria
- Urodialysis
- Suppression › urine, urinary secretion
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027