Compare official labels, inclusions, exclusions, examples, hierarchy, mappings, and practical fit notes.
Use this class for research and experimental development on natural sciences and engineering when the main activity includes Research and experimental development on natural sciences and engineering: and Research and development on natural sciences. Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for diagnostic imaging services and medical laboratory activities when the main activity includes X-ray laboratories and other diagnostic imaging centres and Blood analysis laboratories. Check exclusions and nearby codes before applying it to a mixed activity.
Use this group for the broader activity area of research and experimental development on natural sciences and engineering, including Research and experimental development on natural sciences and engineering. Open the child codes when a more specific code is needed.
These codes do not share a visible parent branch.
A short checklist before choosing one code over another.
These codes do not share a visible parent branch, so compare the main activity and official exclusions carefully.
72.10, 72.1 already list another compared code as related or often confused.
72.10, 86.91 include official exclusions that may point to a better-fitting code.
72.10, 86.91 have non-exact Rev. 2 to Rev. 2.1 mappings; review old records before migration.
| Comparison field | 72.10 | 86.91 | 72.1 |
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| Official title | Research and experimental development on natural sciences and engineering | Diagnostic imaging services and medical laboratory activities | Research and experimental development on natural sciences and engineering |
| Plain-language summary | Use this class for research and experimental development on natural sciences and engineering when the main activity includes Research and experimental development on natural sciences and engineering: and Research and development on natural sciences. Check exclusions and nearby codes before applying it to a mixed activity. | Use this class for diagnostic imaging services and medical laboratory activities when the main activity includes X-ray laboratories and other diagnostic imaging centres and Blood analysis laboratories. Check exclusions and nearby codes before applying it to a mixed activity. | Use this group for the broader activity area of research and experimental development on natural sciences and engineering, including Research and experimental development on natural sciences and engineering. Open the child codes when a more specific code is needed. |
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| Parent hierarchy | N PROFESSIONAL, SCIENTIFIC AND TECHNICAL ACTIVITIES > 72 Scientific research and development > 72.1 Research and experimental development on natural sciences and engineering > 72.10 Research and experimental development on natural sciences and engineering | R HUMAN HEALTH AND SOCIAL WORK ACTIVITIES > 86 Human health activities > 86.9 Other human health activities > 86.91 Diagnostic imaging services and medical laboratory activities | N PROFESSIONAL, SCIENTIFIC AND TECHNICAL ACTIVITIES > 72 Scientific research and development > 72.1 Research and experimental development on natural sciences and engineering |
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