Reserved for future guideline expansion
K66.1
BookmarkHemoperitoneum
Filed alongside this entry 140
under Hemorrhage, hemorrhagic (concealed)
- abdomen R58
- acute idiopathic pulmonary, in infants R04.81
- adenoid J35.8
- adrenal (capsule) (gland) E27.49
- alveolus K08.89
- amputation stump (surgical) T87.89
- anemia (chronic) D50.0
- antepartum (with) O46.90
- anus (sphincter) K62.5
- artery R58
- basilar (ganglion) I61.0
- bladder N32.89
- bowel K92.2
- brainstem (nontraumatic) I61.3
- breast N64.59
- bulbar I61.5
- capillary I78.8
- cecum K92.2
- cerebellar, cerebellum (nontraumatic) I61.4
- cerebromeningeal I61.8
- cervix (uteri) (stump) NEC N88.8
- choroid H31.30
- colon K92.2
- conjunctiva H11.3
- cord, newborn (stump) P51.9
- corpus luteum (ruptured) cyst N83.1
- cortical (brain) I61.1
- cutaneous R23.3
- diathesis (familial) D69.9
- disease D69.9
- duodenum, duodenal K92.2
- epicranial subaponeurotic (massive) , birth injury P12.2
- esophagus K22.89
- excessive, following ectopic gestation (subsequent episode) O08.1
- eye NEC H57.89
- fallopian tube N83.6
- gastroenteric K92.2
- gastrointestinal (tract) K92.2
- genital organ, male N50.1
- genitourinary (tract) NOS R31.9
- gingiva K06.8
- graafian follicle cyst (ruptured) N83.0
- gum K06.8
- heart I51.89
- hypopharyngeal (throat) R04.1
- intermenstrual (regular) N92.3
- internal (organs) NEC R58
- intestine K92.2
- intra-abdominal R58
- intra-alveolar (lung) , newborn P26.8
- intracranial (nontraumatic) I62.9
- intramedullary NEC G95.19
- intraperitoneal K66.1
- intrapontine I61.3
- intrauterine N85.7
- intraventricular I61.5
- intravesical N32.89
- kidney N28.89
- lenticular striate artery I61.0
- liver K76.89
- lung R04.89
- massive umbilical, newborn P51.0
- medulla I61.3
- membrane (brain) I60.8
- meninges, meningeal (brain) (middle) I60.8
- mesentery K66.1
- mouth K13.79
- mucous membrane NEC R58
- muscle M62.89
- nail (subungual) L60.8
- nasal turbinate R04.0
- navel, newborn P51.9
- newborn P54.9
- nipple N64.59
- nose R04.0
- omentum K66.1
- optic nerve (sheath) H47.02
- orbit, orbital H05.23
- ovary NEC N83.8
- oviduct N83.6
- pancreas K86.89
- parathyroid (gland) (spontaneous) E21.4
- penis N48.89
- pericardium, pericarditis I31.2
- peritoneum, peritoneal K66.1
- peritonsillar tissue J35.8
- petechial R23.3
- pituitary (gland) E23.6
- polioencephalitis, superior E51.2
- pons, pontine I61.3
- posterior fossa (nontraumatic) I61.8
- postmenopausal N95.0
- postnasal R04.0
- postpartum NEC (following delivery of placenta) O72.1
- prostate N42.1
- pulmonary R04.89
- purpura (primary) D69.3
- rectum (sphincter) K62.5
- recurring, following initial hemorrhage at time of injury T79.2
- renal N28.89
- respiratory passage or tract R04.9
- retina, retinal (vessels) H35.6
- retroperitoneal K68.3
- scalp R58
- scrotum N50.1
- secondary (nontraumatic) R58
- seminal vesicle N50.1
- skin R23.3
- slipped umbilical ligature P51.8
- spermatic cord N50.1
- spinal (cord) G95.19
- spleen D73.5
- stomach K92.2
- subcortical (brain) I61.0
- subcutaneous R23.3
- subdiaphragmatic R58
- subgaleal P12.2
- subungual L60.8
- suprarenal (capsule) (gland) E27.49
- testis N50.1
- third stage (postpartum) O72.0
- throat R04.1
- thymus (gland) E32.8
- thyroid (cyst) (gland) E07.89
- tongue K14.8
- tonsil J35.8
- tracheobronchial R04.89
- tuberculous NEC A15.0
- tunica vaginalis N50.1
- ulcer - code by site under Ulcer, with hemorrhage K27.4
- urethra (idiopathic) N36.8
- uterus, uterine (abnormal) N93.9
- vagina (abnormal) N93.9
- vas deferens N50.1
- vasa previa O69.4
- ventricular I61.5
- vesical N32.89
- viscera NEC R58
- vitreous (humor) (intraocular) H43.1
- vulva N90.89
Index entries, exactly as the book files them. This says they are listed together — not that any of them is documented in your chart.
Billable FY2027 2026-10-01 → 2027-09-30
How to use this page
Everything the published sources say about one code, on one page.
- Read the Excludes1 block first — it is the one that stops you coding this at all alongside another code.
- Excludes2, Code first, Use additional and Includes follow. A note inherited from a parent category is labelled with the category it came from, so you can see why it applies.
- Official Guidelines sit below. "Guidelines naming this code" cite the code or a range containing it; "Chapter guidance" is the general guidance for its chapter and is the weaker signal.
- Guideline text is quoted verbatim with its section number and page, so you can check it against the published document.
- Risk-model chips show which published CMS models map this code.
What this page does not do
- Guidance is quoted, never paraphrased — a paraphrase of a coding rule is a different rule.
- Medication candidates, where shown, are matched by condition *name* and are offered as candidates for you to judge. They are not "the drugs for this code".
Exclusions13never code together
K66.1code
K00-K95chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes2
K66.1code
Inclusion terms
- Peritoneal hematoma
- Peritoneal hemorrhage
Official Guidelines1names this code
ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.
Index entries leading here3
Alongside this code3same parent — K66
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.