K51.4 is the authoritative medical code for Inflammatory polyps of colon. This classification is used in medical billing and clinical recording to specify the clinical criteria for inflammatory polyps of colon (ICD-10-CM K51.4), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Inflammatory polyps of colon is a non-billable ICD-10-CM category code K51.4. A more specific billable subcode must be selected for claims submission. Includes: noninfective inflammatory bowel disease. Excludes1 (not coded here): Crohn's disease regional enteritis; irritable bowel syndrome K58.-; megacolon K59.3-. Excludes2 (not included here): adenomatous polyp of colon D12.6; polyposis of colon D12.6; polyps of colon NOS K63.5. Use additional code: code to identify any associated fistulas, if applicable:; anal fistula K60.3-; anorectal fistula K60.5-; rectal fistula K60.4-; code to identify manifestations, such as:; pyoderma gangrenosum L88.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for K51.4 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- noninfective inflammatory bowel disease
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- Crohn's disease regional enteritis
- irritable bowel syndrome K58.-
- megacolon K59.3-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- adenomatous polyp of colon D12.6
- polyposis of colon D12.6
- polyps of colon NOS K63.5
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code to identify any associated fistulas, if applicable:
- anal fistula K60.3-
- anorectal fistula K60.5-
- rectal fistula K60.4-
- code to identify manifestations, such as:
- pyoderma gangrenosum L88
Frequently Asked Questions (FAQ) & Clinical Guidance
Can K51.4 be billed directly?
No. K51.4 (Inflammatory polyps of colon) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with K51.4?
Per Excludes1 instructions, K51.4 must not be reported with: Crohn's disease [regional enteritis] (K50.-); irritable bowel syndrome (K58.-); megacolon (K59.3-).
Can K51.4 be reported alongside related conditions?
Per Excludes2 instructions, K51.4 and the following may both be reported when both are present: adenomatous polyp of colon (D12.6); polyposis of colon (D12.6); polyps of colon NOS (K63.5).
Is an additional code needed with K51.4?
Use additional code(s) to specify: code to identify any associated fistulas, if applicable:; anal fistula (K60.3-); anorectal fistula (K60.5-); rectal fistula (K60.4-).
Codes in This Family (8)
Official ICD-10-CM classifications in the same code family as K51.4, with their registry titles.
- K51.40 — Inflammatory polyps of colon without complications
- K51.41 — Inflammatory polyps of colon with complications
- K51.411 — Inflammatory polyps of colon with rectal bleeding
- K51.412 — Inflammatory polyps of colon with intestinal obstruction
- K51.413 — Inflammatory polyps of colon with fistula
- K51.414 — Inflammatory polyps of colon with abscess
- K51.418 — Inflammatory polyps of colon with other complication
- K51.419 — Inflammatory polyps of colon with unspecified complications
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: