Reserved for future guideline expansion
K04.1
BookmarkNecrosis of pulp
Filed alongside this entry 54
under Necrosis, necrotic (ischemic)
- adrenal (capsule) (gland) E27.49
- amputation stump (surgical) (late) T87.50
- antrum J32.0
- artery I77.5
- bladder (aseptic) (sphincter) N32.89
- bone M87.9
- brain I67.89
- breast (aseptic) (fat) (segmental) N64.1
- bronchus J98.09
- central nervous system NEC I67.89
- cerebellar I67.89
- cerebral I67.89
- colon K55.049
- cornea H18.89
- cortical (acute) (renal) N17.1
- dental pulp K04.1
- esophagus K22.89
- ethmoid (bone) J32.2
- intestine (acute) (hemorrhagic) (massive) K55.069
- jaw M27.2
- kidney (bilateral) N28.0
- larynx J38.7
- lung J85.0
- mammary gland (fat) (segmental) N64.1
- medullary (acute) (renal) N17.2
- mesentery K55.069
- nipple, intraoperative and postprocedural N99.861
- nose J34.0
- omentum (with mesenteric infarction) K55.069
- ovary N70.92
- pancreas (aseptic) (duct) (fat) K86.89
- papillary (acute) (renal) N17.2
- perineum N90.89
- peritoneum (with mesenteric infarction) K55.069
- pharynx J02.9
- pituitary (gland) E23.0
- pulmonary J85.0
- pulp (dental) K04.1
- sclera H15.89
- scrotum N50.89
- skin or subcutaneous tissue NEC I96
- spleen D73.5
- stomach K31.89
- stomatitis (ulcerative) A69.0
- subcutaneous fat, newborn P83.88
- subendocardial (acute) I21.4
- suprarenal (capsule) (gland) E27.49
- testis N50.89
- thymus (gland) E32.8
- tonsil J35.8
- trachea J39.8
- tubular (acute) (anoxic) (renal) (toxic) N17.0
- vagina N89.8
- 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".
Exclusions8never code together
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
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes1
K04.1code
Inclusion terms
- Pulpal gangrene
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 code9same parent — K04
K04.0 Pulpitis category K04.2 Pulp degeneration K04.3 Abnormal hard tissue formation in pulp K04.4 Acute apical periodontitis of pulpal origin K04.5 Chronic apical periodontitis K04.6 Periapical abscess with sinus K04.7 Periapical abscess without sinus K04.8 Radicular cyst K04.9 Other and unsp diseases of pulp and periapical tissues category
Medications1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.